Предмет: Химия, автор: AbrikoSikuS

задача номер 110
если можно с подробностями)

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Ответы

Автор ответа: vipmaster2011

Сначала запишем уравнение реакции:
2R-COOH+Mg=RCOOMg+H2
R=CnH2n+1
n(H2)=4,48/22,4=0,2моль
По уравнению реакции кислоты в 2раза больше
n(кислоты)=0,2*2=0,4моль
M(ки-ты)=m/n=24/0,4=60г/моль
Теперь составим пропорцию:
CnH2n+1COOH=60
Подставляем числа:
14n+46=60
n=1
Формула кислоты CH3COOH метановая или муравьиная кислота
M(CH3COOH)=60г/моль

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