JEE Main Chemistry question

Chemistry Aldehydes, Ketones and Carboxylic Acids JEE Main

Identify the correct order of boiling points of the following compounds: CH₃(CH₂)₂CH₂OH (1), CH₃(CH₂)₂CHO (2), CH₃(CH₂)₂COOH (3):

(A)1 > 2 > 3
(B)3 > 1 > 2Correct
(C)1 > 3 > 2
(D)3 > 2 > 1

Answer: (B)

Solution

Carboxylic acids form strong doubly hydrogen-bonded dimers, giving them the highest boiling points; alcohols (single H-bonds)

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Question ID VK-149980