Chemistry - Ionic Equilibrium Question with Solution | TestHub

Assuming that$\mathrm{Ba}(\mathrm{OH}{)}_2$is completely ionised in aqueous solution under the given conditions the concentration of${\mathrm{H}}_3{\mathrm{O}}^{+}$ions in$0.005\mathrm{M}$
aqueous solution of$\mathrm{Ba}(\mathrm{OH}{)}_2$at$298 \mathrm{K}$is _________$\times {10}^{-12} \mathrm{mol}{ \mathrm{L}}^{-1}.$(Nearest integer)