At `25^(@)C`, the solubility product of a salt of `MX_2` type is `3.2xx10^(-8)` in water. The solubility (in mol/L) of `MX_2` in water at the same temperature will be

Options

A. `1.2xx10^(-3)`
B. `2xx10^(-3)`
C. `3.2xx10^(-3)`
D. `1.75xx10^(-3)`

Explanation

`MX_2(s) `K_(sp)=[M^(2+)][X^-]^2=S(2S)^2` [soubility of MX in water]
or, `S^3=3.2xx10^(-8)" ":.S=2xx10^(-3)(M)`