Question

Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

• A. formation of intermolecular H-bonding
• B. formation of intramolecular H-bonding
• C. more extensive association of carboxylic acid via van der Waal's force of attraction
• D. formation of carboxylate ion

Answer 1

Answer: (A)

formation of intermolecular H-bonding

Answer 2

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.