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Chemistry · PYQ NEET UG 2018

हिन्दी

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

  1. formation of intramolecular H-bonding
  2. formation of carboxylate ion
  3. more extensive association of carboxylic acid via van der Waals force of attraction
  4. formation of intermolecular H-bonding

Correct answer · Option 4

formation of intermolecular H-bonding

Explanation

Carboxylic acids form stable intermolecular hydrogen-bonded dimers, which results in much higher boiling points compared to alcohols and carbonyl compounds.
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