Consider the following two substances and their vapor pressures at 298 k.
substance vapor pressure (mmhg)
a 275
b 459
based on this information, compare the characteristics of the two substances.
1. substance a or substance b:
a. has weaker intermolecular forces?
b. has a higher boiling point?
c. is a gas at 300mmhg?
d. has a higher heat of vaporization?

Based on the information, the comparison of characteristics of two substances is as follow:

Substance A:

Substance B:

Explanation:

Comparing the two substances, A and B

a) B has weaker in intermolecular forces.

b) A has a higher boiling point.

c) B is a gas at 300mmHg.

d) A has a higher heat of vaporization

The reason for this is because vapour pressure is the measure of the pressure exerted by a gas above a liquid in a closed container. Strong intermolecular forces produce a lower rate of evaporation and a lower vapor pressure. Weak intermolecular forces produce a higher rate of evaporation and a higher vapor pressure.