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Another useful form of the equation of state of a real gas is:

Pv= A + B/v + C/v[itex]^{2}[/itex] + ...

Where A, B, C, .. are functions of temperature and are called the "VIRIAL COEFFICIENTS".

(what does this mean?)

Theoretical derivations of the equation of state, based on an assumed law of force between the molecules of a gas, usually lead to an equation in virial form.

(What does this mean as well?)

Last thing:

The van der Waals equation can be put in he virial form as follows:

Pv=RT(1-b/v)[itex]^{-1}[/itex]-(a/v)

(where did this come from?)

Thanks in advance people :)!

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# Some useful form of the eq. of state of a REAL gas?

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