charles' law

Charles' Law can be stated as the volume occupied by any sample of gas at a constant pressure is directly proportional to the absolute temperature.
V / T =constant
  • V is the volume
  • T is the absolute temperature (measured in Kelvin)

Charles' Law


Charles' Law can be rearranged into two other useful equations:
V1 / T1 = V2 / T2
  • V1 is the initial volume
  • T1 is the initial temperature
  • V2 is the final volume
  • T2 is the final temperature
V2 = V1 (T2 / T1)
  • V2 is the final volume
  • T2 is the final temperature
  • V1 is the initial volume
  • T1 is the initial temperature

variations on Charles' Law


Important: Charles' Law only works when the pressure is constant.
Note: Charles' Law is fairly accurate but gases tend to deviate from it at very high and low pressures.