Question:

The predominant intermolecular forces present in ethyl acetate, a liquid, are:

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Hydrogen bonding needs H attached to N, O or F; look at the structure of ethyl acetate, \(\mathrm{CH_3COOC_2H_5}\).
Updated On: Nov 5, 2026
  • Dipole-dipole and hydrogen bonding
  • hydrogen bonding and London dispersion
  • London dispersion, dipole-dipole and hydrogen bonding
  • London dispersion and dipole-dipole
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The Correct Option is D

Solution and Explanation

Ethyl acetate is \(\mathrm{CH_3COOC_2H_5}\). It has a polar ester group (C=O and C-O-C), so permanent dipole-dipole interactions are present, and, like all molecules, London dispersion forces.
It has no H atom bonded to O, N or F, so it cannot form hydrogen bonds with other ethyl acetate molecules.
Predominant forces: London dispersion and dipole-dipole.
Answer: (4) London dispersion and dipole-dipole
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