(C) Ammonium benzoate $(C_6H_5COONH_4)$ is a salt of a weak acid $(C_6H_5COOH, pK_a = 4.25)$ and a weak base $(NH_4OH, pK_b = 4.75)$.For a salt of a w

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

(C) Ammonium benzoate $(C_6H_5COONH_4)$ is a salt of a weak acid $(C_6H_5COOH, pK_a = 4.25)$ and a weak base $(NH_4OH, pK_b = 4.75)$.For a salt of a weak acid and a weak base,the $pH$ is given by the formula:$pH = 7 + \frac{1}{2}(pK_a - pK_b)$Substituting the given values:$pH = 7 + \frac{1}{2}(4.25 - 4.75)$$pH = 7 + \frac{1}{2}(-0.50)$$pH = 7 - 0.25 = 6.75$

Class 11 Chemistry 6-2.Equilibrium-II (Ionic Equilibrium)Salt hydrolysis

Medium

The $pK_a$ of a weak acid,benzoic acid and $pK_b$ of a weak base,ammonium hydroxide are $4.25$ and $4.75$ respectively. Then the $pH$ of $0.1 \ M$ solution of ammonium benzoate will be

AP EAMCET 2020 All AP EAMCET

A
$7.1$
B
$7.5$
C
$6.75$
D
$6.5$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

6-2.Equilibrium-II (Ionic Equilibrium)

Subtopic

Salt hydrolysis

Previous Year

AP EAMCET 2020 Paper All AP EAMCET years →

The $pK_{a}$ of a weak acid $HA$ is $4.80$ and the $pK_{b}$ of a weak base $BOH$ is $4.78$. What is the $pH$ of an aqueous solution of the salt $BA$?

Medium

View Solution

Aqueous solution of ferric chloride is

Medium

View Solution

Assertion : $A$ solution of $FeCl_3$ in water produces brown precipitate on standing.
Reason : Hydrolysis of $FeCl_3$ takes place in water.

MediumAIIMS 2001

View Solution

An aqueous solution of aluminum chloride is acidic due to $........$.

Medium

View Solution

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...

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

The $pK_a$ of a weak acid,benzoic acid and $pK_b$ of a weak base,ammonium hydroxide are $4.25$ and $4.75$ respectively. Then the $pH$ of $0.1 \ M$ solution of ammonium benzoate will be

Similar Questions

The $pK_{a}$ of a weak acid $HA$ is $4.80$ and the $pK_{b}$ of a weak base $BOH$ is $4.78$. What is the $pH$ of an aqueous solution of the salt $BA$?

Aqueous solution of ferric chloride is

Assertion : $A$ solution of $FeCl_3$ in water produces brown precipitate on standing.Reason : Hydrolysis of $FeCl_3$ takes place in water.

An aqueous solution of aluminum chloride is acidic due to $........$.

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...

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : $A$ solution of $FeCl_3$ in water produces brown precipitate on standing.
Reason : Hydrolysis of $FeCl_3$ takes place in water.