Van der Waals equation
Rowlinson, J. S. Physical Chemistry Laboratory, University of Oxford, Oxford, United Kingdom.
Last reviewed:August 2020
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An equation of state of gases and liquids proposed by J. D. van der Waals in 1873 which takes into account the nonzero size of molecules and the attractive forces between them. He expressed the pressure p as a function of the absolute temperature T and the molar volume Vm = V/n, where n is the number of moles of gas molecules in a volume V:
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