Which law indicates the inverse relationship between pressure and volume?

The law that indicates the inverse relationship between pressure and volume is Boyle's Law. This law states that, at a constant temperature and for a fixed amount of gas, the pressure of the gas is inversely proportional to its volume. In simpler terms, if the volume of a gas decreases, the pressure increases, and vice versa, as long as the temperature remains constant. This relationship can be mathematically expressed as P1V1 = P2V2, where P represents pressure and V represents volume.

Boyle's Law is fundamental in understanding gas behaviors and is often demonstrated in experiments with syringes or closed containers where the changes in pressure and volume can be observed. It is distinct from Charles's Law, which relates the volume of a gas to its temperature at constant pressure, and from Avogadro's Law, which relates the volume of a gas to the amount of substance at constant temperature and pressure. The Ideal Gas Law combines several gas laws, including Boyle's Law, but does not specifically define the inverse relationship exclusively.