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

Step-by-step solution

Due to formation of stronger 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. Acid > alcohol > aldehyde > ketone → A s e x t e n t o f H - b o n d d e c r e a s e s s o B . P . d e c r e a s e s