Final answer:
Vapor pressure indicates how easily a substance will evaporate. Vapor pressure indicates how easily a substance will evaporate, affected by the strength of its intermolecular forces and temperature. The correct answer is A.
Step-by-step explanation:
Vapor pressure is a property of a liquid based on the strength of its intermolecular forces. It indicates how easily a substance will evaporate. A liquid with weak intermolecular forces evaporates more easily and has a higher vapor pressure, while a liquid with stronger intermolecular forces does not evaporate easily and has a lower vapor pressure. For example, a nonpolar liquid with weak dispersion forces, like diethyl ether, has a higher vapor pressure compared to a liquid with stronger intermolecular forces.
Vapor pressure indicates how easily a substance will evaporate, affected by the strength of its intermolecular forces and temperature.
Vapor pressure best describes how easily a substance will evaporate. It is the measure of the pressure exerted by a gas above a liquid in a sealed container. Higher vapor pressure indicates weaker intermolecular forces, meaning the liquid evaporates more readily. Conversely, strong intermolecular forces result in a lower vapor pressure, indicating that the liquid does not evaporate easily.
At a certain point, when the rate of molecules evaporating equals the rate of molecules condensing, the system reaches a dynamic equilibrium. This equilibrium vapor pressure is dependent on the temperature of the liquid, with higher temperatures leading to higher vapor pressures. The Clausius-Clapeyron equation relates temperature and vapor pressure and can be used to determine a substance's enthalpy of vaporization.