The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is________________?
Correct answer: A
Explanation
Higher heat of vaporization means stronger intermolecular forces. Since 40.6 > 38.6 > 26.8, the order is H2O > C2H5OH > CS2.