Предмет: Химия, автор: 1Джули

Объясните, пожалуйста, как решить такую задачу.
Вычислить объемную долю водорода, образовавшегося при взаимодействии 150г алюминия, содержащего 15% примесей с соляной кислотой,если водорода образовалось 142,79 Л .

Ответы

Автор ответа: хихимик

2Al +6HCl = 2AlCl3 + 3H2
n(Al) = 150/27 = 5,55 моль
n(H2) теор = 1,5n(Al) = 5,55 x 1,5 = 8,33 моль
V(H2) теор = 8,33 x 22,4 = 186,7 л
выход (H2) = 142,79 /186,7 = 0,7649 или 76,49 %

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