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

Options

A. `CdS (K_(sp) = 36 xx 10^(-30))`
B. `FeS (K_(sp) = 11 xx 10^(-20))`
C. `HgS(K_(sp) = 32 xx 10^(-54))`
D. `ZnS(K_(sp) = 11 xx 10^(-22))`

Answer

B

Explanation

Higher the `K_(sp)`, more soluble is that compound in `H_(2)O`
`:. K_(sp)` of `FeS (11 xx 10^(-20))` is highest.
So, it is more soluble and has maximum solubility in `H_(2)O`.