Chemistry - Ionic Equilibrium Question with Solution | TestHub

When equal volumes are mixed molarity reduce to half.
For precipitation ${\mathrm{Q}}_{\mathrm{SP}}=\left[{\mathrm{A}}^{+2}\right]{\left[{\mathrm{Y}}^{-}\right]}^2>{\mathrm{K}}_{\mathrm{SP}}$
(1) ${\mathrm{Q}}_{\mathrm{SP}}=\left(1.8\times 10^{-3}\right){\left(\frac{5}{2}\times 10^{-4}\right)}^2<{\mathrm{K}}_{\mathrm{sP}}$
(2) ${\mathrm{Q}}_{\mathrm{SP}}=\left(10^{-4}\right){\left(0.4\times 10^{-3}\right)}^2<{\mathrm{K}}_{\mathrm{sp}}$
(3) ${\mathrm{Q}}_{\mathrm{SP}}=\left(10^{-2}\right){\left(10^{-2}\right)}^2>{\mathrm{K}}_{\mathrm{sP}}$
(4) ${\mathrm{Q}}_{\mathrm{SP}}=\left(\frac{1.5}{2}\times 10^{-4}\right){\left(\frac{1.5}{2}\times 10^{-3}\right)}^2<{\mathrm{K}}_{\mathrm{sP}}$