Question

Degree of hydrolysis $\left(\alpha \right)$ for a salt of strong acid and weak base

• A. is independent of dilution
• B. increases with dilution
• C. increases with decrease in $K_b$
• D. increases with increase in temperature

Answer 1

Answer: (B), (C), (D)

The correct options are
B increases with dilution
C increases with decrease in $K_b$
D increases with increase in temperature

The expression for the degree of hydrolysis of a salt of strong acid and weak base is $h=\sqrt{\frac{K_h}{C}}=\sqrt{\frac{K_w}{K_b\times C}}$
Hence, the degree of hydrolysis (h), increases with dilution. It also increases with decrease in $K_b$.
As the temperature increases, the degree of hydrolysis increases.
Thus, options $B,C$ and $D$ are correct.