NEET Solved Paper 2018 Question 22

Question: Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their [NEET - 2018]

Options:

A) More extensive association of carboxylic acid via van der Waals force of attraction

B) Formation of carboxylate ion

C) Formation of intramolecular H-bonding

D) Formation of intermolecular H-bonding

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Answer:

Correct Answer: D

Solution:

  • Due to formation of intermolecular H-bonding in carboxylic acid, association occurs. Hence boiling point increases and become more than the boiling point of aldehydes, ketones and alcohols of comparable molecular masses.