Знает кто-нибудь ? В каком направлении в стандартных условиях может протекать реакция:
Fe2O3(к) + 3CO(г) D 2Fe(к) + 3CO2(г)?
ответ дайте на основании расчетов изменения энергии Гиббса реакции DG0298 по значениям стандартных теплот образования DfH0298 и стандартных энтропий S0298 веществ, участвующих в реакции.​

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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