Question:

Phenol is a weaker acid than ethanol. Groups with $+M$ effect and $-I$ effect decrease acidity at $m$-position.

Updated On: Jul 28, 2022
  • If both assertion and reason are true and reason is a correct explanation of the assertion
  • If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  • If the assertion is true but the reason is false
  • If both the assertion and reason are false
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is D

Solution and Explanation

Phenol is a stronger acid than the ethanol. This is due to the resonance stabilisaton of the phenolate ion which is produced after deprotonation.
But there is no such stabilisation in the case of ethanol $C _{2} H _{5} OH \rightleftharpoons C _{2} H _{5} O ^{-}+ H ^{+}$ The groups with $+M$ and $-I$ effect decrease the acidity at pposition, but at m-position the acidity is increased due to $-I$ -effect.
Was this answer helpful?
0
0

Questions Asked in AIIMS exam

View More Questions

Concepts Used:

Alcohols, Phenols, and Ethers

Alcohol is formed when a saturated carbon atom bonds to a hydroxyl (-OH) group. It is an organic compound that contains a hydroxyl functional group attached to a carbon atom.

Phenol is formed when the -OH group replaces the hydrogen atom in benzene. It is an organic compound in which a hydroxyl group directly attaches to an aromatic hydrocarbon.

Ether is formed when oxygen atom bonds to two alkyl or aryl groups. It is an organic compound that has an oxygen atom that is connected to two aryl and alkyl groups.

Read More: Alcohol, Phenol, and Ethers