Chemistry - Ionic Equilibrium Question with Solution | TestHub

$X{Y}_{2\left(s\right)}\to \underset{{10}^{-3}}{X^{+}{}_{\left(aq\right)}}+\underset{2\times {10}^{-3}}{2Y^{-}{}_{\left(aq\right)}}$

${\mathrm{K}}_{\mathrm{sp}}=\left[{\mathrm{X}}^{+}\right]{\left[{\mathrm{Y}}^{-}\right]}^2$

${\mathrm{K}}_{\mathrm{sp}}=\left[{10}^{-3}\right]{\left[2\times {10}^{-3}\right]}^2$

${\mathrm{K}}_{\mathrm{sp}}=4\times {10}^{-9}{\mathrm{M}}^3$