Ideal gas law

The ideal gas law is the equation of a possible ideal gas, first made by Benoît Paul Émile Clapeyron in 1834.

The state or amount of an amount of gas is found by using its pressure, volume, and temperature in the equation:

[math]\displaystyle{ \ pV = nRT }[/math]

where

[math]\displaystyle{ \ p }[/math] is the absolute pressure of the gas,

[math]\displaystyle{ \ V }[/math] is the volume of the gas,

[math]\displaystyle{ \ n }[/math] is the number of moles of gas,

[math]\displaystyle{ \ R }[/math] is the universal gas constant,

[math]\displaystyle{ \ T }[/math] is the absolute temperature.

Ideal Gas Law Media

Isotherms of an ideal gas for different temperatures. The curved lines are rectangular hyperbolae of the form y = a/x.
Molecular collisions within a closed container (a propane tank) are shown (right). The arrows represent the random motions and collisions of these molecules.
Relationship between the six gas laws

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