Charles’s Law is about the relationship between temperature and volume in flexible containers
For a fixed mass of gas at constant pressure, the volume is directly proportional to the kelvin temperature. That means, for example, that if you double the Kelvin temperature from, say to 300 K to 600 K, at constant pressure, the volume of a fixed mass of the gas will double as well.
You can express this mathematically as
V = constant x T
where V represents the volume of the gas and T represents temperature.
- Charles’s Law also helps us define absolute temperature (0K or -273.15 C).
- According to the expression, absolute temperature is the temperature at which a gas volume is zero.