Предмет: Химия, автор: m5505

 

составить по два молекулярных уравнения для каждой из следующих реакций ионного обмена:

а) Cu(2+) + H2S= CuS + 2H+

б) Pb(2+) + SO4(2-) = PbSO4

Объяснить, почему данный реакции могут протекать в прямом направлении.

 

 

Какие из нижеперечисленных солей подвергаются гидролизу? Составить молекулярные и ионно-молекулярные уравнения гидролиза этих солей. Какое значение рН (<,>,=7) имеют растворы каждой из трех солей?

Соли: KCl, Na2CO3, NH4BR

 

 

 

 

 

Ответы

Автор ответа: kotofeika
0

а) CuO+H2S=Cus+H2O

б) PbNO3+H2SO4=PbSO4

Данные реакции идут в одном напрвалении т.к  CuS и PbSO4 выпадают в осадок

 

 

 

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