Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • The of a weak acid, HA, is 4.80. The <img alt="\mathrm{pK_{b}}" src="https://entranceco

The \mathrm{pK_{a}} of a weak acid, HA, is 4.80. The \mathrm{pK_{b}} of weak base BOH is 4.78. The \mathrm{pH} of an aqueous solution of the corresponding salt BA will be

Option: 1

9.22


Option: 2

9.58


Option: 3

4.79


Option: 4

7.01


Answers (1)

best_answer

As we have learned,

pH for the hydrolysis of a salt of a weak acid and weak base is given by

\mathrm{pH=7+\frac{1}{2}\; (pK_{a}-pK_{b})}

Given that \mathrm{pK_{a}=4.8\; and\; pK_{b}=4.78}

\mathrm{\therefore \; \; \; pH=7+\frac{1}{2}\; (pK_{a}-pK_{b})=7+\frac{1}{2}\; (4.80-4.78)=7.01} 

Hence, the correct answer is Option(4)

Posted by

vishal kumar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

Amrita BTech Admission 2025: JEE Main-based registration deadline extended to August 30

Latest Question