Номер 1, страница 53 - гдз по химии 10 класс учебник Еремин, Кузьменко

Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета

Авторы: Еремин В. В., Кузьменко Н. Е., Теренин В. И., Дроздов А. А., Лунин В. В.

Тип: Учебник

Издательство: Просвещение

Год издания: 2023 - 2026

Уровень обучения: углублённый

Цвет обложки: белый, зелёный с радугой

Допущено Министерством просвещения Российской Федерации

Глава 1. Повторение и углубление знаний. Параграф 7. Классификация химических реакций. Окислительно-восстановительные реакции - номер 1, страница 53.

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                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1108
                      #items: array:1 [
                        0 => App\Models\Term {#1109
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #original: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1110
                      #items: array:5 [
                        0 => App\Models\Term {#1111
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4330
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Еремин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Вадим"
                            "field_patronymic" => "Владимирович"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4330
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Еремин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Вадим"
                            "field_patronymic" => "Владимирович"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1112
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4876
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Кузьменко"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Николай"
                            "field_patronymic" => "Егорович"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4876
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Кузьменко"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Николай"
                            "field_patronymic" => "Егорович"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        2 => App\Models\Term {#1113
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 5912
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Теренин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Ильич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 5912
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Теренин"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Ильич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        3 => App\Models\Term {#1114
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4290
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Дроздов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Андрей"
                            "field_patronymic" => "Анатольевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4290
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Дроздов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Андрей"
                            "field_patronymic" => "Анатольевич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        4 => App\Models\Term {#1115
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 5031
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Лунин"
                            "field_bio" => null
                            "field_degree_rp" => "доктор химических наук, академика РАН"
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => "Лунина"
                          ]
                          #original: array:12 [
                            "id" => 5031
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Лунин"
                            "field_bio" => null
                            "field_degree_rp" => "доктор химических наук, академика РАН"
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => "Лунина"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1116
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1117
                      #items: array:1 [
                        0 => App\Models\Term {#1118
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #original: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1119
                      #items: array:1 [
                        0 => App\Models\Term {#1120
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #original: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1121
                      #items: array:1 [
                        0 => App\Models\Term {#1122
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #original: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1123
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1124
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1125
                      #items: array:1 [
                        0 => App\Models\Term {#1126
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 39
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "uglublennyy"
                          ]
                          #original: array:6 [
                            "id" => 39
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "uglublennyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1127
                      #items: array:1 [
                        0 => App\Models\Term {#1128
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #original: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => "10"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1129
                      #items: array:1 [
                        0 => App\Models\Term {#1130
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "stereotipnoe"
                          ]
                          #original: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "stereotipnoe"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1131
                      #items: array:1 [
                        0 => App\Models\Term {#1115}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
                    "field_cover_description" => "с радугой"
                    "field_publication_year" => "2023"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => null
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "697"
                    "field_priority" => "10"
                    "field_default_folder" => "/himiya_10/eremin-u23/"
                    "field_isbn" => null
                    "field_cover" => array:1 [
                      0 => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1576"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1132
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1133
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1134
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/10-klass/himiya/eremin-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1135
                      #items: array:2 [
                        0 => App\Models\Term {#1136
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 45
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "белый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "belyy"
                          ]
                          #original: array:6 [
                            "id" => 45
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "белый"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "belyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1137
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 47
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "зелёный"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "zelyonyy"
                          ]
                          #original: array:6 [
                            "id" => 47
                            "created_at" => "2026-04-10 00:54:11"
                            "updated_at" => null
                            "name" => "зелёный"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "zelyonyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 558
                      "class_subject" => 500
                    ]
                  ]
                  #original: array:50 [
                    "id" => 1003
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_tree_default_status" => "tasks"
                    "field_pages_status" => null
                    "field_subject" => Illuminate\Database\Eloquent\Collection {#1105}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1106}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1108}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1110}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1116}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1117}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1119}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1121}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1123}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1124}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1125}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1127}
                    "field_publication_number" => "10"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1129}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1131}
                    "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
                    "field_cover_description" => "с радугой"
                    "field_publication_year" => "2023"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => null
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "697"
                    "field_priority" => "10"
                    "field_default_folder" => "/himiya_10/eremin-u23/"
                    "field_isbn" => null
                    "field_cover" => array:1 [
                      0 => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1576"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1132}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1133}
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1134}
                    "field_url" => "/10-klass/himiya/eremin-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1135}
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 558
                      "class_subject" => 500
                    ]
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1138
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:23 [
            "id" => 662698
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Повторение и углубление знаний"
            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1104}
            "field_page_start" => "5"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1140}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1138}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1139
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:23 [
            "id" => 662705
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Классификация химических реакций. Окислительно-восстановительные реакции"
            "field_branch_order" => "7"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1144
              #items: array:1 [
                0 => App\Models\Term {#1141
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "45"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1143
              #items: array:1 [
                0 => App\Models\Book {#1103}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1142
              #items: array:1 [
                0 => App\Models\Branch {#1006}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:23 [
            "id" => 662705
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_display_title" => "Классификация химических реакций. Окислительно-восстановительные реакции"
            "field_branch_order" => "7"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1144}
            "field_page_start" => "45"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1143}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1142}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
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          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1089
      #items: array:3 [
        0 => App\Models\Element {#1082
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:7 [
            "id" => 818278
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1074
              #items: array:1 [
                0 => App\Models\Edition {#1066
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1829
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1081 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1079 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1076 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1829
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1081 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1079 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1076 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "662852"
              "type" => "task"
            ]
            "text" => "<p><strong>1.</strong> Дайте определения понятий: «степень окисления», «окислитель», «восстановитель», «окисление», «восстановление».</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "1-1.jpg"
                "alt" => null
                "width" => "862"
                "height" => 106
                "path" => "/media/himiya_10/eremin-u23/0-07/1-1.webp?ts=1738779448"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 818278
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1074}
            "task" => array:2 [
              "refs" => "662852"
              "type" => "task"
            ]
            "text" => "<p><strong>1.</strong> Дайте определения понятий: «степень окисления», «окислитель», «восстановитель», «окисление», «восстановление».</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "1-1.jpg"
                "alt" => null
                "width" => "862"
                "height" => 106
                "path" => "/media/himiya_10/eremin-u23/0-07/1-1.webp?ts=1738779448"
              ]
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1077
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 818421
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1061
              #items: array:1 [
                0 => App\Models\Edition {#1075
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1830
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Решение"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1073 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Ладыко (Торчило)"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "1-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1070 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1071 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1068 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1830
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "title" => "Решение"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1073 …2}
                    "field_content_type" => "free"
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            "text" => "<p><strong>«степень окисления»</strong></p><p>Степень окисления — это условный (формальный) заряд атома в химическом соединении, вычисленный из предположения, что все химические связи в этом соединении являются ионными. Это означает, что электроны каждой связи полностью смещены к атому с большей электроотрицательностью. Степень окисления может быть положительной, отрицательной или равной нулю. Например, в молекуле воды ($H_2O$) у кислорода степень окисления -2, а у водорода +1. Сумма степеней окисления всех атомов в нейтральной молекуле всегда равна нулю, а в ионе — его заряду.</p><p><strong>Ответ:</strong> Степень окисления – это условный заряд атома в молекуле, рассчитанный исходя из предположения, что все связи имеют ионный характер.</p><p><strong>«окислитель»</strong></p><p>Окислитель — это атом, ион или молекула, которые в ходе окислительно-восстановительной реакции (ОВР) принимают электроны от другого вещества (восстановителя). В результате этого процесса окислитель сам восстанавливается, то есть его степень окисления понижается. Примерами сильных окислителей служат галогены ($Cl_2, F_2$), кислород ($O_2$), перманганат-ион ($MnO_4^-$), дихромат-ион ($Cr_2O_7^{2-}$).</p><p><strong>Ответ:</strong> Окислитель – это частица (атом, ион или молекула), которая принимает электроны в ходе окислительно-восстановительной реакции.</p><p><strong>«восстановитель»</strong></p><p>Восстановитель — это атом, ион или молекула, которые в ходе ОВР отдают электроны другому веществу (окислителю). В результате этого процесса восстановитель сам окисляется, то есть его степень окисления повышается. Типичными восстановителями являются активные металлы (например, $Na, Mg, Al$), водород ($H_2$), углерод ($C$), а также соединения, где элементы находятся в низшей степени окисления (например, $H_2S, NH_3$).</p><p><strong>Ответ:</strong> Восстановитель – это частица (атом, ион или молекула), которая отдает электроны в ходе окислительно-восстановительной реакции.</p><p><strong>«окисление»</strong></p><p>Окисление — это процесс отдачи электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается повышением степени окисления элемента. Окисление является неотъемлемой частью любой окислительно-восстановительной реакции. Например, в реакции горения магния $2Mg^0 + O_2^0 \rightarrow 2Mg^{+2}O^{-2}$ магний отдает электроны ($Mg^0 - 2e^- \rightarrow Mg^{+2}$) и, следовательно, окисляется.</p><p><strong>Ответ:</strong> Окисление – это процесс отдачи электронов, который приводит к увеличению степени окисления элемента.</p><p><strong>«восстановление»</strong></p><p>Восстановление — это процесс присоединения электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается понижением степени окисления элемента. Восстановление всегда происходит одновременно с окислением. В упомянутой выше реакции горения магния ($2Mg + O_2 \rightarrow 2MgO$) кислород принимает электроны ($O_2^0 + 4e^- \rightarrow 2O^{-2}$) и, следовательно, восстанавливается.</p><p><strong>Ответ:</strong> Восстановление – это процесс присоединения электронов, который приводит к уменьшению степени окисления элемента.</p>"
          ]
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            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1058}
            "task" => array:2 [
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              "type" => "task"
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            "text" => "<p><strong>«степень окисления»</strong></p><p>Степень окисления — это условный (формальный) заряд атома в химическом соединении, вычисленный из предположения, что все химические связи в этом соединении являются ионными. Это означает, что электроны каждой связи полностью смещены к атому с большей электроотрицательностью. Степень окисления может быть положительной, отрицательной или равной нулю. Например, в молекуле воды ($H_2O$) у кислорода степень окисления -2, а у водорода +1. Сумма степеней окисления всех атомов в нейтральной молекуле всегда равна нулю, а в ионе — его заряду.</p><p><strong>Ответ:</strong> Степень окисления – это условный заряд атома в молекуле, рассчитанный исходя из предположения, что все связи имеют ионный характер.</p><p><strong>«окислитель»</strong></p><p>Окислитель — это атом, ион или молекула, которые в ходе окислительно-восстановительной реакции (ОВР) принимают электроны от другого вещества (восстановителя). В результате этого процесса окислитель сам восстанавливается, то есть его степень окисления понижается. Примерами сильных окислителей служат галогены ($Cl_2, F_2$), кислород ($O_2$), перманганат-ион ($MnO_4^-$), дихромат-ион ($Cr_2O_7^{2-}$).</p><p><strong>Ответ:</strong> Окислитель – это частица (атом, ион или молекула), которая принимает электроны в ходе окислительно-восстановительной реакции.</p><p><strong>«восстановитель»</strong></p><p>Восстановитель — это атом, ион или молекула, которые в ходе ОВР отдают электроны другому веществу (окислителю). В результате этого процесса восстановитель сам окисляется, то есть его степень окисления повышается. Типичными восстановителями являются активные металлы (например, $Na, Mg, Al$), водород ($H_2$), углерод ($C$), а также соединения, где элементы находятся в низшей степени окисления (например, $H_2S, NH_3$).</p><p><strong>Ответ:</strong> Восстановитель – это частица (атом, ион или молекула), которая отдает электроны в ходе окислительно-восстановительной реакции.</p><p><strong>«окисление»</strong></p><p>Окисление — это процесс отдачи электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается повышением степени окисления элемента. Окисление является неотъемлемой частью любой окислительно-восстановительной реакции. Например, в реакции горения магния $2Mg^0 + O_2^0 \rightarrow 2Mg^{+2}O^{-2}$ магний отдает электроны ($Mg^0 - 2e^- \rightarrow Mg^{+2}$) и, следовательно, окисляется.</p><p><strong>Ответ:</strong> Окисление – это процесс отдачи электронов, который приводит к увеличению степени окисления элемента.</p><p><strong>«восстановление»</strong></p><p>Восстановление — это процесс присоединения электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается понижением степени окисления элемента. Восстановление всегда происходит одновременно с окислением. В упомянутой выше реакции горения магния ($2Mg + O_2 \rightarrow 2MgO$) кислород принимает электроны ($O_2^0 + 4e^- \rightarrow 2O^{-2}$) и, следовательно, восстанавливается.</p><p><strong>Ответ:</strong> Восстановление – это процесс присоединения электронов, который приводит к уменьшению степени окисления элемента.</p>"
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                }
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№1 (с. 53)
Условие. №1 (с. 53)
скриншот условия
Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета, страница 53, номер 1, Условие

1. Дайте определения понятий: «степень окисления», «окислитель», «восстановитель», «окисление», «восстановление».

Решение. №1 (с. 53)
Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета, страница 53, номер 1, Решение
Решение 2. №1 (с. 53)

«степень окисления»

Степень окисления — это условный (формальный) заряд атома в химическом соединении, вычисленный из предположения, что все химические связи в этом соединении являются ионными. Это означает, что электроны каждой связи полностью смещены к атому с большей электроотрицательностью. Степень окисления может быть положительной, отрицательной или равной нулю. Например, в молекуле воды ($H_2O$) у кислорода степень окисления -2, а у водорода +1. Сумма степеней окисления всех атомов в нейтральной молекуле всегда равна нулю, а в ионе — его заряду.

Ответ: Степень окисления – это условный заряд атома в молекуле, рассчитанный исходя из предположения, что все связи имеют ионный характер.

«окислитель»

Окислитель — это атом, ион или молекула, которые в ходе окислительно-восстановительной реакции (ОВР) принимают электроны от другого вещества (восстановителя). В результате этого процесса окислитель сам восстанавливается, то есть его степень окисления понижается. Примерами сильных окислителей служат галогены ($Cl_2, F_2$), кислород ($O_2$), перманганат-ион ($MnO_4^-$), дихромат-ион ($Cr_2O_7^{2-}$).

Ответ: Окислитель – это частица (атом, ион или молекула), которая принимает электроны в ходе окислительно-восстановительной реакции.

«восстановитель»

Восстановитель — это атом, ион или молекула, которые в ходе ОВР отдают электроны другому веществу (окислителю). В результате этого процесса восстановитель сам окисляется, то есть его степень окисления повышается. Типичными восстановителями являются активные металлы (например, $Na, Mg, Al$), водород ($H_2$), углерод ($C$), а также соединения, где элементы находятся в низшей степени окисления (например, $H_2S, NH_3$).

Ответ: Восстановитель – это частица (атом, ион или молекула), которая отдает электроны в ходе окислительно-восстановительной реакции.

«окисление»

Окисление — это процесс отдачи электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается повышением степени окисления элемента. Окисление является неотъемлемой частью любой окислительно-восстановительной реакции. Например, в реакции горения магния $2Mg^0 + O_2^0 \rightarrow 2Mg^{+2}O^{-2}$ магний отдает электроны ($Mg^0 - 2e^- \rightarrow Mg^{+2}$) и, следовательно, окисляется.

Ответ: Окисление – это процесс отдачи электронов, который приводит к увеличению степени окисления элемента.

«восстановление»

Восстановление — это процесс присоединения электронов веществом (атомом, ионом или молекулой). Этот процесс всегда сопровождается понижением степени окисления элемента. Восстановление всегда происходит одновременно с окислением. В упомянутой выше реакции горения магния ($2Mg + O_2 \rightarrow 2MgO$) кислород принимает электроны ($O_2^0 + 4e^- \rightarrow 2O^{-2}$) и, следовательно, восстанавливается.

Ответ: Восстановление – это процесс присоединения электронов, который приводит к уменьшению степени окисления элемента.

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