Q1: A vapor whose partial pressure is less than its equilibrium vapor pressure is called the __________ vapor.

ANS:B - superheated

A vapor whose partial pressure is less than its equilibrium vapor pressure is called the unsaturated vapor. In an unsaturated vapor, the partial pressure of the vapor is lower than the equilibrium vapor pressure, indicating that the vapor has not reached its maximum capacity for vaporization at that temperature. In contrast, a saturated vapor is in equilibrium with its liquid phase, where the partial pressure of the vapor is equal to the equilibrium vapor pressure at a given temperature. A superheated vapor is a vapor that is at a temperature higher than its boiling point at the given pressure, and a dry gaseous state typically refers to a gas that does not contain any water vapor.