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

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

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If assertion and reason are both incorrect.

Text Solution

Verified by Experts

The correct Answer is:
C
(c) Correct reason. Carboxylate ion is more resonance stabilised than phenate ion because its contributing structures are exactly equivalent while those of phenate ion are not.
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DINESH PUBLICATION-CARBOXYLIC ACIDS -MULTIPLE CHOICE QUESTION BANK (MCQB)
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  7. Assertion : Carboxylic acids are stronger acids than phenols. Reason...

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  8. Assertion : Although fluorine is more electronegative than chlorine, p...

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  9. Assertion : Acid amides are weakly basic in nature. Reason : Basic c...

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  10. Assertion: The pK(a) of acetic acid is lower than that of phenol. R...

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  11. Assertion: Formic acid reduces mercuric chloride to mercurous chloride...

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  14. Assertion: Formic acid reduces mercuric chloride to mercurous chloride...

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  15. Assertion : Carboxylic acids contain a carbonyl group but donot give t...

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