Degree of hydrolysis for a salt of strong acid and weak base is :

A quantitative parameter for the hydrolysis of salts is the degree of hydrolysis (h). It is equal to the percentage of the overall concentration of the particular salt in solution that is made up of hydrolyzed molecules, and in most circumstances it is low.

When the temperature rises and the salt is diluted, there is an increase in the degree of hydrolysis for strong acid and weak base salts. If both the acid and the base are weak, then the degree is unaffected by dilution.

The degree of hydrolysis for salts of strong acids and weak bases is $h=\sqrt{\frac{{\mathrm{K}}_{\mathrm{w}}}{{\mathrm{K}}_{\mathrm{b}}\times c}}$

As a result, K grows as h increases ${\mathrm{K}}_b$decreases.