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Carboxylic Acids

Easychemistry

Which compound has the highest boiling point due to extensive intermolecular hydrogen-bonded dimer formation?

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About This Question

Subject
chemistry
Chapter
organic compounds containing oxygen
Topic
carboxylic acids
Difficulty
Easy
Year
2025
Tags
Boiling PointHydrogen BondingCarboxylic Acid Dimer

Solution

Correct Answer:

Ethanoic acid

Carboxylic acids form strong cyclic dimers through two hydrogen bonds between neighboring molecules. This significantly increases intermolecular attraction and raises boiling point compared to aldehydes, ketones, and ethers of similar molecular mass. Therefore ethanoic acid has the highest boiling point among the given compounds.

This easy difficulty chemistry question is from the chapter organic compounds containing oxygen, covering the topic of carboxylic acids. It appeared in the 2025 exam.

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