Предмет: Химия, автор: toma613

при сплавлении 0.4г кальция с углеродом образовался карбид кальция. найти массу продукта реакции ​

Ответы

Автор ответа: viktorpolezaev62
9

m(Ca) =0,4г

Найти:

m(CaC2)-?

Решение:

Ca+2C=CaC2

n(Ca)=m/M=0,4г:40г/моль=0,01моль

M(Ca)=40г/моль

n(Ca)=n(CaC2)=0,01моль

m(CaC2)=n*M=0,01моль*64г/моль=0,64г

M(CaC2)=40+12*2=64г/моль

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