A solution is an equimolar mixture of two volatile components A and B. Pure A has a vapor pressure of 50 torr, and pure B has a vapor pressure of 100 torr. The vapor pressure of the mixture is 85 torr. What can you conclude about the relative strengths of the intermolecular forces between particles of A and B (relative to those between particles of A and those between particles of B)?

a) The intermolecular forces between particles A and B are weaker than those between particles of A and those between particles of B.

b) The intermolecular forces between particles A and B are stronger than those between particles of A and those between particles of B.

c) The intermolecular forces between particles A and B are the same as those between particles of A and those between particles of B.

d) Nothing can be concluded about the relative strengths of intermolecular forces from this observation.