Question

Melting point, enthalpy of vapourisation and viscosity data of H₂O and D₂O is given below :

On the basis of this data explain in which of these liquids intermolecular forces are stronger?

Answer 1

The melting point, enthalpy of vapourisation and viscosity values of all these items depend upon the intermolecular forces of attraction. Since their values are higher for D₂O as compared to those of H₂O, therefore, intermolecular forces of attraction are stronger in D₂O than in H₂O.