Question

a substance having very low vapour pressure is expected to have a. extremely weak interpartircle forces of attractions b. relatively small heat of vaporization c. a relatively high boiling point d. relatively high rate of evaporation

Answer 1

The vapor pressure is the pressure exerted by vapor molecules on a surface with which it is in a state of equilibrium.

A substance having very low vapor pressure is expected to have option-a. extremely weak interpartircle forces of attractions

.The interparticle forces will easily leave the liquid phase and enter the vapor phase.

Answer 2

the answer will be option A

i.e. ,

weak intermolecular forces of attraction

hope this helps u