Chemical And Ionic Equilibrium Result Question 13

13. Solubility product constant ( $K_{\mathrm{sp}}$ ) of salts of types $M X, M X_2$ and $M_3 X$ at temperature ’ $T$ ’ are $4.0 \times 10^{-8}, 3.2 \times 10^{-14}$ and $2.7 \times 10^{-15}$, respectively. Solubilities ( $\mathrm{mol} $ $\mathrm{dm}^{-3}$ ) of the salts at temperature ’ $T$ ’ are in the order

(2008, 3M)

(a) $M X>M X_2>M_3 X$

(b) $M_3 X>M X_2>M X$

(c) $M X_2>M_3 X>M X$

(d) $M X>M_3 X>M X_2$