van der Waals

This is one of the oldest EOS, and probably — after the EOS of the perfect gas — the best known. It is the ancestor of the cubic equations, i.e., the calculation of volumes for given temperature and pressure leads to a cubic equation.

The EOS exhibits all features of “realistic” equations of state, but is only qualitatively correct.

adjustable parameters: 2

For mixture calculations the following mixing theories are available:

[1] J. D. van der Waals, On the Continuity of the Gaseous and Liquid States, PhD thesis republished by J. S. Rowlinson, Studies in Statistical Mechanics, Vol. XIV, North-Holland, Amsterdam 1988.

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