Вложил получишь Дайте сравнительную характеристику бензола и метана по плану:
а) состав; б) структурная формула; в) химические свойства бензола, отличающиеся от свойств метана и общие с ними. Запишите уравнения необходимых реакций.
2. Какие из веществ, формулы которых приведены ниже, являются гомологами, а какие — изомерами? Дайте им названия по международной номенклатуре.
СН3
а) CH3- CН2 - CН2-CН3 в) CН2= CH-CН3
б) CН3- C- CН2 -СН2-CН3 г) CH3- CН= CH-CH3
СН2
3. Укажите, какие из перечисленных веществ реагируют с бромной водой: этен, пропан, бензол, циклобутан. Напишите уравнения возможных реакций и назовите продукты.
CIVII20II7
Объяснение:
определим валентность хлора в его соединении с кислородом — Cl2O7.
1. Записываем известную валентность кислорода над формулой. Неизвестную валентность обозначаем буквой x:
Clx2OII7.
2. Находим сумму единиц валентности каждого элемента. Для этого его валентность умножаем на число атомов:
x⋅2=2⋅7.
3. Вычисляем x:
2x=14,x=14:2=7.
Валентность хлора равна VII:
ClVII2OII7.
Составление формулы бинарного соединения по валентностям химических элементов
Если известны валентности двух элементов, то можно составить формулу их соединения.
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