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Which of the following acids has the sma...

Which of the following acids has the smallest dissociation constant?

A

`CH_(3)CHFCOOH`

B

`FCH_(2)CH_(2)COOH`

C

`BrCH_(2)CH_(2)COOH`

D

`CH_(3)CHBrCOOH`

Text Solution

Verified by Experts

The correct Answer is:
C
`BrCH_(2)CH_(2)COOH` is least acidic or has less `K_(a)` i.e., dissociation constant. It is (a) due to lesser –I effect of Br than F and (b) Br atom further away form −COOH group.
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