Предмет: Химия, автор: bayana98765

Вес 7,4 грамма гидроксид кальция реагирует сколько граммов фосфорный кислоты?

Ответы

Автор ответа: Elli5

Уравнение реакции
3Ca(OH)2 + 2H3PO4(разб. ) = Ca3(PO4)2↓ + 6H2O
7,4 г гидроксида кальция - это 0,1 моля
На 3 моля гидроксида кальция требуется 2 моля фосфорной ксилоты, значит на 0,1 моля потребуется 0,1*2/3 = 0,0667 моля
Если кислота 100%, то ее потребуется 0,0667*98 =6,54 г

Я не уверена что правильно...

bayana98765: Спасибо большое

Elli5: Всегда пожалуйста)

Elli5: Поплагодарить не забудьь)))

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