Chemistry - Chemical Equilibrium Question with Solution | TestHub

The equilibrium constant for ionization of aliphatic amine$\mathrm{R}\mathrm{N}{\mathrm{H}}_2$(g) in water is
$\mathrm{R}\mathrm{N}{\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\rightleftharpoons \mathrm{R}\mathrm{N}{\mathrm{H}}_3^{+}\left(\mathrm{a}\mathrm{q}\right)+\mathrm{O}{\mathrm{H}}^{-}\left(\mathrm{a}\mathrm{q}\right)$
is$8\times 10^{-6}$at$25°\mathrm{C}$. Partial pressure of amine at equilibrium is 0.5 bar. The pOH of the aqueous solution of amine will be