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# Charles' Law

## Volume of an ideal gas vs. temperature.

Charles' law states that in a perfect gas where the mass and pressure is kept constant, the volume vary directly with the absolute temperature.

Charles' Law can be expressed as

V / T = constant                                          (1)

or

V1 / T1 = V2/ T2(1b)

where

V = volume (m3, ft3 ...)

T = absolute temperature (K, R)

### Example - Charles' Law

A gas occupies a volume of 2 liter at 0 oC . The volume it occupies at 100 oC can be calculated as

V2=  T2V1 / T1

= (373 K)  (2 liters) / (273 K)

= 2.73 (liters )

## Related Topics

• ### Gases and Compressed Air

Properties of air, LNG, LPG and other common gases. Pipeline capacities and sizing of relief valves.

## Related Documents

• ### Air - Volume vs. Temperature

Air volume vs. temperature correction factor compared to Normal Air Conditions.
• ### Boyle's Law (Mariotte's Law)

The volume of an ideal gas vs. pressure.
• ### Non-ideal gas - Van der Waal's Equation and Constants

The van der Waals constants for more than 200 gases used to correct for non-ideal behavior of gases caused by intermolecular forces and the volume occupied by the gas particles.
• ### The Ideal Gas Law

The relationship between volume, pressure, temperature and quantity of a gas, including definition of gas density.
• ### Total and Partial Pressure - Dalton's Law of Partial Pressures

How to calculate total pressure and partial pressures for gas mixtures from Ideal Gas Law.

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## Citation

• The Engineering ToolBox (2008). Charles' Law. [online] Available at: https://www.engineeringtoolbox.com/charles-law-d_1277.html [Accessed Day Month Year].

Modify the access date according your visit.

7.25.9

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