Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The ionisation constant of an acid, 
is the measure of strength of an acid. The 
values of acetic acid, hypochlorous acid and formic acid are 
and 
respectively. which of the following orders of pH of 
mol 
solutions of these acids is correct?
Text Solution
Verified by ExpertsThe correct answer is:
B
is a measure of the strength of the acid i.e., larger the value of 
the stronger is the acid.
Thus, the correct order of acidic strength is
HCOOH > 
> HClO
Stronger the acid, lesser will be the value of pH. Hence, the correct order of pH is
HClO > 
> HCOOH
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