Предмет: Химия, автор: Leshkin21

каустическую соду массой 212 гр. обработали 40% ным раствором серной кислоты массой 215 гр. Напишите уравнение реакции, найдите бъем выделившегося газа. СРОЧно, помогите пожалуйста

Ответы

Автор ответа: Sanek252med

Na2CO3 + H2SO4 = Na2SO4 + H2O + CO2

кол-во соды 212/106=2 моль

масса кислоты 0,4*215=86 г

кол-во кислоты 86/98=0,88 моль

сода в избытке

кол-во газа CO2 0.88 моль

объем 0,88*22,4=19,7 л

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