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Give Two Reactions that Show the Acidic Nature of Phenol. Compare Acidity of Phenol with that of Ethanol. - CBSE (Science) Class 12 - Chemistry

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Question

Give two reactions that show the acidic nature of phenol. Compare acidity of phenol with that of ethanol.

Solution

The acidic nature of phenol can be represented by the following two reactions:

(i) Phenol reacts with sodium to give sodium phenoxide, liberating H2.

(ii) Phenol reacts with sodium hydroxide to give sodium phenoxide and water as by-products.

The acidity of phenol is more than that of ethanol. This is because after losing a proton, the phenoxide ion undergoes resonance and gets stabilized whereas ethoxide ion does not.

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 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 11: Alcohols, Phenols and Ethers
Q: 14 | Page no. 345
Solution Give Two Reactions that Show the Acidic Nature of Phenol. Compare Acidity of Phenol with that of Ethanol. Concept: Chemical Reactions of Alcohols and Phenols - Reactions Involving Cleavage of O–H Bond.
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