Which formula represents Boyle's law?

Boyle's Law describes the relationship between the pressure and volume of a gas at constant temperature. The law states that the product of the pressure and volume of a gas is a constant when the temperature is held constant. This means that if the pressure of a gas increases, its volume decreases proportionally, and vice versa, provided the temperature does not change.

The correct formula, which demonstrates this relationship, is P1 x V1 = P2 x V2. In this equation, P1 and V1 represent the initial pressure and volume of the gas, while P2 and V2 represent the final pressure and volume after a change has occurred, assuming the temperature remains unchanged. This mathematical relationship effectively captures Boyle's Law, allowing for calculations regarding changes in gas pressure and volume under the set conditions.

Understanding this relationship is crucial for applications in refrigeration and air conditioning, as it helps technicians predict how changes in pressure can affect system performance and efficiency.