Question:
The ascending order of acidity of –OH group in the following compounds is:
Choose the correct answer from the options given below :
The ascending order of acidity of –OH group in the following compounds is:
Choose the correct answer from the options given below :
Choose the correct answer from the options given below :
Updated On: Mar 21, 2025
\( (A) < (D) < (C) < (B) < (E)\)
\( (C) < (A) < (D) < (B) < (E)\)
\( (C) < (D) < (B) < (A) < (E)\)
\( (A) < (C) < (D) < (B) < (E)\)
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The Correct Option is D
Solution and Explanation
The acidity of phenols increases with the presence of electron-withdrawing groups (like -NO2) and decreases with electron-donating groups (like -CH3).
- (A): Contains a butyl group (electron-donating), making it the least acidic.
- (C): Contains a methoxy group (CH3O-) (electron-donating), slightly more acidic than (A).
- (D): Simple phenol (C6H5OH), with no additional electron-withdrawing or donating groups, has moderate acidity.
- (B): Contains an -OH group with a chlorine substituent (electron-withdrawing) on the aromatic ring, making it more acidic than (D).
- (E): Contains an -OH group with a nitro substituent (NO2) which is strongly electron-withdrawing, making it the most acidic.
Thus, the correct order of acidity is $(A) < (C) < (D) < (B) < (E)$.
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Concepts Used:
Aldehydes, Ketones and Carboxylic Acids - Chemical Reactions
Chemical Reactions of Aldehydes and Ketones:
- Cross aldol condensation
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