Предмет: Химия, автор: misha20070514

Найдите объем водорода который выделяется в результате реакции замещения между Ca и 30 грамм 15% H2S04,Подробное решение, желательно фото листка с оформлением.

Ответы

Автор ответа: perhydrol

дано:

m (H2S04) = 30г

W (H2S04) = 15%

M (H2SO4) = 98г/моль

V (H2) - ?

Ca + H2SO4 = CaSO4 + H2

m (H2S04) = 30×15%/100%=4.5г

n (H2S04) = 4.5/98=0.046 моль

n (H2S04) = n (H2)

V (H2) = 0,046×22.4=1.03л

Ответ: 1,03л

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