Question

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

• A. Independent of dilution
• B. Increases with dilution
• C. Decreases with increase in $K_b$ value
• D. Increases with increase in $K_b$ value

Answer 1

Answer: (B), (C)

The correct options are
B Increases with dilution
C Decreases with increase in $K_b$ value

As for salt of strong acid and weak base degree of hydrolysis is given by, $h=\sqrt{\frac{K_w}{K_b.C}}$
Hence, it increases on dilution because $h$ is proportional to square root of $K_w$ and it decreases with increases in $K_b$ value because $h$ is inversely proportional to the square root of $K_b$. As $h$ is inversely proportional to square root of $C$ i.e., concentration, it increases with dilution.