Chemistry - Ionic Equilibrium Question with Solution | TestHub

The solubility products of$\mathrm{A}\mathrm{l}(\mathrm{O}\mathrm{H}{)}_3$and$\mathrm{Z}\mathrm{n}(\mathrm{O}\mathrm{H}{)}_2$are$8.5\times 10^{-23}$and$1.8\times 10^{-14}$respectively. If$\mathrm{N}{\mathrm{H}}_4\mathrm{O}\mathrm{H}$is added to a solution containing$\mathrm{A}{\mathrm{l}}^{3+}$and$\mathrm{Z}{\mathrm{n}}^{2+}$ions, then substance precipitated first is: