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Acidity of Carboxylic Acids

Among the fol...

Question

Among the following acids which has the lowest pKA value

A

C H_{3} C O O H

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B

HCOOH

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C

(C H_{3})_{2} C H - C O O H

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D

C H_{3} C H_{2} C O O H

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Solution

The correct option is B HCOOH
$K_{a} α \frac{1}{p K_{a}};$ The value of $K_{a}$ is highest for HCOOH.

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