NEET Chemistry Reactions of Carboxylic Acids MCQ Question
Consider a diagram showing the mechanism of esterification of a carboxylic acid with an alcohol. Which step involves the conversion of the hydroxyl group into a better leaving group?
Protonation of the carbonyl oxygen
Nucleophilic addition of the alcohol
Proton transfer in the tetrahedral intermediate
Formation of the protonated ester
Correct Answer
Detailed Explanation
Proton transfer in the tetrahedral intermediate converts the hydroxyl group into a –OH2+ group, which is a better leaving group and eliminated as water during esterification.
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