Q.

Statement I : Carboxylic acid is weaker acid than phenol.

Statement II : Phenoxide ion has more resonating structures than carboxylate ion.

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a

Statement I and Statement II both are correct 

b

Statement I  and Statement II  both are incorrect 

c

Statement I is incorrect and Statement II  is correct 

d

Statement I is correct and Statement II  is incorrect 

answer is C.

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Detailed Solution

Carboxylate ion is more stable than phenoxide ion;

Resonance structures of carboxylate have negative charge delocalized on electronegative oxygen atom moreover they are indistinguishable; Carboxylate ion is more stable;

Resonance structures of phenoxide ion have negative charge delocalized on carbon atom also, they are unequivalent;  Phenoxide ion is less stable;

Phenols are less acidic than carboxylic acids;

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Statement I : Carboxylic acid is weaker acid than phenol.Statement II : Phenoxide ion has more resonating structures than carboxylate ion.