# Difference between revisions of "Van der Waals equation"

m (minor fmt) |
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The law states: | The law states: | ||

<cmath>\left(P-\alpha\frac{n^2}{V^2}\right)(V-\beta n)=nRT</cmath> | <cmath>\left(P-\alpha\frac{n^2}{V^2}\right)(V-\beta n)=nRT</cmath> | ||

− | where <math>\alpha</math> and <math>\beta</math> are dependent on the gas, <math>V</math> is the volume, <math>P</math> is the pressure, <math>n</math> is the number of | + | where <math>\alpha</math> and <math>\beta</math> are dependent on the gas, <math>V</math> is the volume, <math>P</math> is the pressure, <math>n</math> is the number of [[mole]]s of gas, <math>R</math> is the [[universal gas constant]], <math>T</math> is the temperature. |

The van der Waals equation is useful for high-pressure gases where the [[ideal gas law]] is inaccurate. | The van der Waals equation is useful for high-pressure gases where the [[ideal gas law]] is inaccurate. |

## Revision as of 07:58, 11 March 2008

The **van der Waals equation** is an equation of state in thermodynamics relating the physical quantities pressure, volume, temperature, and van der Waals forces in a gas.

## Equation

The law states: where and are dependent on the gas, is the volume, is the pressure, is the number of moles of gas, is the universal gas constant, is the temperature.

The van der Waals equation is useful for high-pressure gases where the ideal gas law is inaccurate.

## See also

*This article is a stub. Help us out by expanding it.*