Предмет: Химия, автор: Wwvvvv

У розчин сульфатної кислоти масою500г з масовою часткою 19,6% долили натрій гідроксид масою 122 г. Яка маса солі при цьому утвориться?

Ответы

Автор ответа: chsofiaua

Ответ:

Объяснение:

m(роз.) - 500

W(H2SO4) -19,6

Знайти: m(H2SO4)-?

Розв'язок :

W=m1/m2 *100%

16%= m солі/122.5 *100%, звідси

m солі=19,5*122.5/100 = 16

Від-дь:m=16

Wwvvvv: Треба знайти Na2SO4

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