Which substance has the greatest intermolecular forces of attraction between molecules? Is it propane ethanol water or ethanolic acid

Answer 1

To be honest about it I don't know the answer to this question. However, based on the size of a water molecule vs the size of the acetic acid molecule, the distances for a hydrogen bond are greater in acetic acid intermolecular (not intramolecular) and as such the water intermolecular bonds would be stronger due to the proximity issues. Please let me know if you find differently.