Question

Zn(OH)2,Pb(OH)2 and Ca(OH)2 are all white precipitates. Zn(OH)2 and Pb(OH)2 dissolves in excess of Na(OH) solution but Ca(OH)2 does not. Explain why

Answer 1

Hii

you are welcome in my ans

Zn(OH)2 ,PB(OH)2 and Ca(OH)2 form ppt because they are havier

and in NaOH excess solution Zn(OH)2 and Pb(OH)2 dissolve due tike bond between them But in Ca(OH)2 ,calcium belongs to alkali group form strong ionic bond between them it not easily soluble .

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