Question

A weak acid HX has the dissociation constant 1 x 10^-5. It forms NaX on reaction with alkali. The degree of hydrolysis of 0.1 M solution of NaX is:

(a) 0.0001%
(b) 0.01 %
(c) 0.1%
(d) 0.15 %

Answer 1

Correct option is (b) 0.01 %

Hydrolysis reaction is

X^– + H₂O ⇌ HX + OH^–.

For a salt of weak acid with strong base,