Question

In the hydrolysis of salt of a weak acid and a weak base__________.

• A. the degree of hydrolysis of cation and anion is different
• B. the degree of hydrolysis of cation and anion is same
• C. the degree of hydrolysis of cation and anion is different and they can never be assumed same
• D. the degree of hydrolysis of cation and anion is different, but they are close to each other when they are getting hydrolysed in the presence of each other

Answer 1

The correct option is D the degree of hydrolysis of cation and anion is different, but they are close to each other when they are getting hydrolysed in the presence of each other

Due to the common ion effect, the hydrolysis of both the ions occurs to a greater extent in the presence of each other.
The hydrolysis of the ion having a smaller value of $K_n$ is affected to a greater extent than the hydrolysis of the other ion.
Hence, cation and anion have a different degree of hydrolysis, but when they are getting hydrolyzed in the presence of each other, their degrees of hydrolysis are close to each other.

Hence, the correct option is $\left(D\right)$.