Intermolecular hydrogen bonding increases the enthalpy of vapourization of a liquid due to
decrease in the attraction between molecules
increase in the attraction between molecules
decrease in the molar mass of unassociated liquid molecules.
Increase in the effective molar mass of Hydrogen-bonded molecules.
On cooling gases and liquids, temperature _______, intermolecular attraction ________, and intermolecular space between molecules __________.