What is the formula associated with Charles' Law?

Charles' Law describes the relationship between the volume and temperature of a gas at constant pressure. It states that the volume of a gas is directly proportional to its absolute temperature (measured in Kelvin) when pressure is kept constant.

The correct formula, V1/T1 = V2/T2, aligns with this principle, indicating that if the temperature of a gas increases, its volume will also increase, provided the pressure does not change. This relationship allows for calculations involving the initial and final states of a gas under varying temperatures, assisting in understanding how gases behave thermally.

The other formulas address different gas laws or relationships. For instance, the first option is related to Gay-Lussac's Law which connects pressure and temperature. The total pressure equation pertains to Dalton's Law of partial pressures, which is relevant for mixtures of gases, while the final expression represents Boyle's Law, which relates pressure and volume at constant temperature. Understanding these distinctions is vital for grasping gas behavior in various physical contexts.