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When of the following compounds would h...

When of the following compounds would have the smallest value of `pK_(a)`?

A

benzoyl chloride

B

o-chlorobenzoic acid

C

p-chlorobenzoic acid

D

benzyl chloride

Text Solution

Verified by Experts

The correct Answer is:
A
It gives bezoyl chloride `(C_(6)H_(5)COOCl)`.
`C_(6)H_(6)COOH+PCl_(5) overset(100^(@)C) to underset("Benzoyl chloride")(C_(6)H_(5)COCl)+POCl_(3)+HCl`
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