van der Waals equation(redirected from Van der Waals equation of state)
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van der Waals equation
An equation of state that relates the pressure, volume, and absolute temperature of a gas taking into account the finite size of molecules, and their intermolecular attraction, having the form RT = (P + av-2)(v - b), where R is the gas constant, T is the absolute temperature, P is the pressure, v is the volume, and a and b are constants.
[After Johannes Diderik van der Waals.]
van der Waals equation(ˈvæn də ˌwɑːlz)
(General Physics) an equation of state for a non-ideal gas that takes account of intermolecular forces and the volume occupied by the molecules of the gas