1.

Assertion : Direct attachment of groups such as phenyl or vinyl to the carboxylic acid, increases the acidity of the carboxylic acid. Reason : Resonance effect always increases the acidity of carboxylic acids.

Answer»

If both ASSERTION and REASON are TRUE and reason is the correct EXPLANATION of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :This is due to greater ELECTRONEGATIVITY of `sp^(2)` hybridised carbon to which carboxyl carbon is attached.


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