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Half of the formic acid solution is neut...

Half of the formic acid solution is neutralised on addition of KOH solution to it. If `K_(a)" of " HCOOH" of " 2 xx 10^(-4)`. Then find pH of the solution.

A

3.7

B

10.3

C

3.85

D

4.3

Text Solution

Verified by Experts

The correct Answer is:
A
`p^(H)=p^(ka)+log ([HCOOK])/([HCOOH])`
`p^(H)=4-log 2+log I`
`p^H=3.7`
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