Assertion ( A) : Phenols are more acidic than aliphatic alcohols.
Reason (R) : Phenoxides are stabilized by resonance.

Both Assertion & Reason are correct, Reason is the correct explanation for Assertion.

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Both Assertion & Reason are correct, Reason is not the correct explanation of Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion & Reason are correct, Reason is the correct explanation for Assertion.
When a molecule of phenol loses a proton, it forms phenoxide ion which is stabilized by resonance as the negative charge is delocalized over aromatic nucleus.No such resonance is present when an alcohol loses a proton to form alkoxide ion. Hence, phenols are more acidic than alcohols.

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Similar questions

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b)If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c)If assertion is true but reason is false.
(d)If assertion is false but reason is true.

Assertion: Phenol is more reactive than benzene towards electrophilic substitution reaction.
Reason : In the case of phenol, the intermediate phenoxide is more resonance stabilized.

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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Assertion ( A) : Phenols are more acidic than aliphatic alcohols.Reason (R) : Phenoxides are stabilized by resonance.

Assertion ( A) : Phenols are more acidic than aliphatic alcohols.
Reason (R) : Phenoxides are stabilized by resonance.