A weak acid HX has the dissociation constant M. It forms a salt NaX on reaction with alkali. The per — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

NaX undergoes anionic hydrolysis. The hydrolysis constant $K_h = \frac{K_w}{K_a} = \frac{10^{-14}}{10^{-5}} = 10^{-9}$. The degree of hydrolysis $h = \sqrt{\frac{K_h}{C}} = \sqrt{\frac{10^{-9}}{0.1}} = \sqrt{10^{-8}} = 10^{-4}$. The percentage hydrolysis is $h \times 100\% = 10^{-4} \times 100\% = 10^{-2}\% = 0.01\%$.