Final answer:
The substance with the smaller heat of vaporization will undergo a larger change in vapor pressure for a given change in temperature.
Step-by-step explanation:
The substance with the smaller heat of vaporization will undergo a larger change in vapor pressure for a given change in temperature. The heat of vaporization represents the amount of energy required to change a substance from a liquid to a gas at its boiling point. A smaller heat of vaporization indicates that the substance is easier to vaporize, meaning it will experience a larger increase in vapor pressure for a given increase in temperature.