Calculate the volume of hydrogen sulfide that can be obtained during the hydrolysis

Calculate the volume of hydrogen sulfide that can be obtained during the hydrolysis of technical aluminum sulfide weighing 60 g, which contains 12.5% impurities.

Запишем уравнение реакции гидролиза сульфида алюминия водой.

Al2S3 + 6H2O = 2Al(OH)3 + 3H2S

Al2S3 – технический, содержит примеси (12,5 %). Найдем массу чистого сульфида алюминия (100% – 12,5% = 87,5%).

m(Al2S3) = 60*87,5/100 = 52,5 г.

Рассчитаем количество моль Al2S3.

n(Al2S3) = m/M = 52,5/150,2 = 0,35 моль

Составим пропорцию:

1 моль Al2S– 3 моль H2S

0,35 моль Al2S3 – x моль H2S

x (H2S) = 1,05 моль

Вычислим объем сероводорода, домножив количество моль на молярный объем газа при нормальных условиях.

V(H2S) = n*Vm = 1,05*22,4 = 23,52 л.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.