Предмет: Химия, автор: kirill65

Найдите массу гидроксида лития, образованного при взаимодействии 20г лития с водой.

Ответы

Автор ответа: JuliaMalacheva
0

хим.уравнение 2Li+H2O=2LIOH+ H2(газ)

 

M(Li)=7 г/моль

n(li)=m:M=20:7=2.9 моль

n(LiOH)=2.9 моль

M(LiOH)=7+16+1=24 Г/МОЛЬ

m(LiOH)=N*M=2.9*24=68.6 Г

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