1.

Which of the following metal sulphides have maximum solubility in water ?

Answer»

`HGS (K_(SP) = 10^(-54))`
`CdS (K_(sp) = 10^(-30))`
`FeS(K_(sp) = 10^(-20))`
`ZnS (K_(sp) = 10^(-22))`

Solution :FeS has maximum solubility in water. Please note that the SOLUBILITIES of different salts in water are directly proportional to their `k_(sp)` value


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