MHT CET 2026 Chemistry question

Identify the reason for the highest boiling point of R-COOH as compared to alkanes, ethers, alcohols and aldehydes.

(A)Formation of carboxylate ion
(B)Van der waals force of attraction
(C)Formation of intramolecular hydrogen bonding
(D)Formation of intermolecular hydrogen bondingCorrect

Answer: (D)

Solution

Carboxylic acid molecules are held together by strong intermolecular hydrogen bonds between the -OH of one molecule and the C=O of another, so they exist as hydrogen-bonded dimers (even in the vapour phase of many acids). This extensive association, stronger than in alcohols, requires much more energy to

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Question ID VK-101497