Which law specifically relates to the behavior of gases under varied pressure and volume conditions?

Boyle's Law specifically addresses the relationship between the pressure and volume of a gas when the temperature is held constant. This law states that for a given amount of gas at a constant temperature, the pressure of the gas is inversely proportional to its volume. In mathematical terms, this relationship can be expressed as PV = k, where P is the pressure, V is the volume, and k is a constant.

As the volume of a gas increases, the pressure decreases, and conversely, if the volume decreases, the pressure increases, provided the temperature remains constant. This fundamental principle helps in understanding how gases behave in various engineering applications and conditions involving changes in pressure and volume.

In contrast, Charles's Law focuses on the relationship between the volume and temperature of a gas at constant pressure, Avogadro's Law deals with the volume of a gas and the number of gas particles at constant temperature and pressure, and the Ideal Gas Law combines these relationships to describe the behavior of ideal gases more generally. Each of these laws provides vital insights into gas behavior, but specifically for changes in pressure and volume under constant temperature, Boyle's Law is the key principle.