Which salt represents the highest degree of h | vedclass

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

Question

(B) The degree of hydrolysis $(h)$ for a salt depends on the strength of the acid and base from which it is derived. $NaCl$ is a salt of a strong acid

Vedclass · Accepted Answer

$CH_3COONH_4$

Vedclass · Answer

(B) The degree of hydrolysis $(h)$ for a salt depends on the strength of the acid and base from which it is derived. $NaCl$ is a salt of a strong acid $(HCl)$ and a strong base $(NaOH)$,so it does not undergo hydrolysis. $CH_3COONa$ is a salt of a weak acid $(CH_3COOH)$ and a strong base $(NaOH)$,which undergoes anionic hydrolysis. $NH_4Cl$ is a salt of a strong acid $(HCl)$ and a weak base $(NH_4OH)$,which undergoes cationic hydrolysis. $CH_3COONH_4$ is a salt of a weak acid $(CH_3COOH)$ and a weak base $(NH_4OH)$. For a salt of a weak acid and a weak base,the degree of hydrolysis is given by $h = \sqrt{K_h} = \sqrt{\frac{K_w}{K_a 	imes K_b}}$. Since both $K_a$ and $K_b$ are small,the value of $h$ is significantly higher compared to salts derived from a strong acid/weak base or weak acid/strong base. Therefore,$CH_3COONH_4$ undergoes the highest degree of hydrolysis.

Which salt represents the highest degree of hydrolysis?

Similar Questions

Do you expect different products in solution when aluminium $(III)$ chloride and potassium chloride are treated separately with $(i)$ normal water,$(ii)$ acidified water,and $(iii)$ alkaline water? Write equations wherever necessary.

If the dissociation constant of $HCN$ is $10^{-7}$,what are the values of $pH$,$h$ (degree of hydrolysis),and $[OH^-]$ for a $10^{-3} \ M$ solution of $KCN$,respectively?

The degree of hydrolysis of a salt of weak acid and weak base in its $0.1 \, M$ solution is found to be $50 \%$. If the molarity of the solution is $0.2 \, M$,the percentage hydrolysis of the salt should be $...... \%$.

What should be the degree of hydrolysis of $0.01 \ M$ Lithium formate solution at $25 \ ^oC$,if $K_h = 3.175 \times 10^{-5}$?

Which among the following salts is formed from a strong base and a weak acid?

Vedclass Test Series

Exam Paper Generator

Online Exam Module