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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
Bromine is lesser electronegtive than fluorine. Bromine attached to `beta`-carbon will cause least enhancement in the dissociation of halo substituted propanoic acid.
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