Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • The ionisation constant of an acid, Ka, is the measure of the strength of an acid. The Ka values of acetic acid, hypochlorous acid and formic acid are 1.74\times 10^{-5}, 3.0X10^{-8} and 1.8\times 10^{-4}, respectively.

The ionisation constant of an acid, Ka, is the measure of the strength of an acid. The Ka values of acetic acid, hypochlorous acid and formic acid are 1.74\times 10^{-5}, 3.0\times 10^{-8}  and 1.8\times 10^{-4} respectively. Which of the following orders of pH of 0.1 mol dm-3 solutions of these acids is correct?

 (i) acetic acid > hypochlorous acid > formic acid

 (ii) hypochlorous acid > acetic acid > formic acid

(iii) formic acid > hypochlorous acid > acetic acid

 (iv) formic acid > acetic acid > hypochlorous acid

Answers (1)

The answer is the option (iv) formic acid > acetic acid > hypochlorous acid

Explanation: Higher the value of Ka higher will be the acidic strength.

1.8\times 10^{-4} > 1.74\times 10^{-5} > 3.0\times 10^{-8}

Posted by

infoexpert22

View full answer

Similar Questions

Latest Question