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Assertion:The pK(a) of acetic acid is lo...

Assertion:The `pK_(a)` of acetic acid is lower than that of phenol.
Reason:Phenoxide ion is more resonance stablised.

A

If both assertion and reason are true and reason is the explaination of assertion.

B

If both assertion and reason are true but reason is not the correct explaination of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Lower the value of `pK_(a)`,more acidic will be the compound.Acetic acid is more acidic than phenol.This indicates that carboxylate ion should be more stable than the phenoxide ion and it is clear that carboxylate ion has more equivalent resonating structures than the phenoxide ion.
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