0.5 , M ammonium benzoate is hydrolysed to 0. | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) For the salt hydrolysis of ammonium benzoate $(C_6H_5COONH_4)$,the degree of hydrolysis is given as $\alpha = 0.25 \% = 0.0025$.Concentration $C =

Vedclass · Accepted Answer

$3.125 	imes 10^{-6}$

Vedclass · Answer

(C) For the salt hydrolysis of ammonium benzoate $(C_6H_5COONH_4)$,the degree of hydrolysis is given as $\alpha = 0.25 \% = 0.0025$.Concentration $C = 0.5 \, M$.The formula for the hydrolysis constant $(K_h)$ for a salt of a weak acid and a weak base is $K_h = \frac{\alpha^2 C}{1 - \alpha}$.Since $\alpha$ is very small $(0.0025 \ll 1)$,we can approximate $1 - \alpha \approx 1$.Thus,$K_h = \alpha^2 C$.Substituting the values: $K_h = (0.0025)^2 	imes 0.5$.$K_h = (6.25 	imes 10^{-6}) 	imes 0.5 = 3.125 	imes 10^{-6}$.

$0.5 \, M$ ammonium benzoate is hydrolysed to $0.25 \%$ percent,hence its hydrolysis constant is

Similar Questions

In the hydrolysis of a salt of a weak acid and a strong base,$A^{-} + H_{2}O \rightleftharpoons HA + OH^{-}$,the hydrolysis constant $(K_{h})$ is equal to...

$A$ salt $X$ is dissolved in water $(pH = 7)$,and the resulting solution becomes alkaline in nature. The salt is made of:

The aqueous solution of which one of the following is basic?

Which of the following cannot be hydrolysed?

Which of the following salts when dissolved in water will get hydrolysed?

Vedclass Test Series

Exam Paper Generator

Online Exam Module