Which equation is associated with Charles's law?

Charles's law states that at constant pressure, the volume of a gas is directly proportional to its temperature measured in Kelvin. This relationship can be mathematically represented by the equation v1/t1 = v2/t2, where v represents volume and t represents temperature. This means if the temperature of a gas increases, its volume will also increase, provided the pressure remains unchanged. This direct proportionality conveys the foundational idea behind Charles's law, reinforcing the concept that as temperature rises, gas molecules move more energetically and thus occupy a larger volume.

In contrast, the other equations pertain to different gas laws: one describes the combined relationship of pressure and temperature, another represents Boyle's law regarding volume and pressure at constant temperature, and the fourth relates to the combined gas law. Each of these explores different aspects of gas behavior under varying conditions, but only the equation associated with Charles's law accurately illustrates the direct relationship between volume and temperature.