Which gas law relates the pressure and volume of a gas at constant temperature?

Boyle's law is the gas law that describes the relationship between the pressure and volume of a gas when the temperature is held constant. This law states that the product of the pressure and volume of a gas is a constant value, meaning if the volume of the gas decreases, the pressure increases, provided the temperature remains unchanged. Mathematically, this can be expressed as (PV = k), where (P) represents pressure, (V) represents volume, and (k) is a constant for a given amount of gas at a specific temperature.

Understanding this relationship is crucial in various applications, such as understanding how syringes work or how gases behave under pressure changes. The other laws mentioned relate to different aspects: Avogadro's law deals with the volume of gas at a constant temperature and pressure, Charles's law describes how gases expand with increasing temperature, and Graham's law focuses on the rates of effusion of gases. Therefore, Boyle's law specifically addresses the pressure-volume relationship at constant temperature.