Virial coefficients of model systems: Difference between revisions

Revision as of 12:31, 21 March 2007

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-The virial equation of state is used to describe the behavior of diluted gases.
-It is usually written as an expansion of the [[compresiblity factor]], <math> Z </math>, in terms of either the
-density or the pressure. In the first case:
-:<math> \frac{p V}{N k_B T } = Z = 1 + \sum_{k=2}^{\infty} B_k(T) \rho^{k-1}</math>.
-where
-* <math> p </math> is the pressure
-*<math> V </math>  is the volume
-*<math> N </math> is the number of molecules
-*<math> \rho \equiv \frac{N}{V} </math> is the (number) density
-*<math> B_k\left( T \right) </math> is called the k-th virial coefficient
-== Systems ==
 *[[hard sphere: virial equation of state|Hard spheres]]