$Ni ( OH )_{2}$નો આયનિય ગુણાકાર $2 \times 10^{-15}$ આપેલ છે.
\(NaO{H_{(aq)}} \to \mathop {N{a^ + }}\limits_{0.1\,M} \left( {aq} \right) + \mathop {O{H^ - }}\limits_{0.1\,M} \left( {aq} \right)\)
\(Ni{(OH)_2}(s) \rightleftharpoons \mathop {N{i^{ + 2}}}\limits_{S'} \left( {aq} \right) + \mathop {2O{H^ - }}\limits_{0.1 + 2S'} \left( {aq} \right)\)
Ionic product \(=\left(S^{\prime}\right)\left(0.1+2 S^{\prime}\right)^{2}\)
\(2 \times 10^{-15}=S^{\prime}(0.1)^{2}\)
\(S^{\prime}=2 \times 10^{-13} M\)