Предмет: Химия, автор: zaram

при взаимодействии 240 г фосфора кислоты с гидроксидом натрия образуется соль и вода. найдите объем воды .
Пожалуйста помогите, срочно!!!!​

Ответы

Автор ответа: Devnullmonster
1

Ответ:

H₃PO₄ + 3NaOH = Na₃PO₄ + 3H₂O

m(H₃PO₄) = 240 г.

M(H₃PO₄) = 3 + 31 + 64 = 98 г/моль

n(H₃PO₄) = 240/98 = 2,4 моль

H₃PO₄ : 3H₂O

1           :            3

n(H₂O) = 2,4 × 3 = 7,2 моль

V(H₂O) = 7,2 моль × 22,4 л/моль = 161,28 л.

Ответ: 161,28 л.

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