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Which carboxylic acids among the followi...

Which carboxylic acids among the following have `pk_(a)` value less than that for methanoic acid

A

Benzene carboxylic acid

B

chloroethanoic acid

C

bromoethanoic acid

D

phenyl ethanoic acid

Text Solution

Verified by Experts

The correct Answer is:
B, C
`ClCH_(2)COOH and BrCH_(2)COOH` are stronger than `HCOOH`
`C_(6)H_(5)COOH` and `C_(6)H_(5)CH_(2)COOH` are weaker than HCOOH.
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