Van der Waals constants

  • #1
Does the compressibility factor of a gas say anything about Van der Waals constants?
 

Answers and Replies

  • #2
SpectraCat
Science Advisor
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Does the compressibility factor of a gas say anything about Van der Waals constants?

Not sure what you mean ... compressibility factor is a way of combining measured data to determine deviations of real gases from ideal behavior. The vdW equation is a way of understanding/explaining from first principles how non-ideal behavior arises from microscopic interactions between gas molecules.

If you have sufficient data on the compressibility factor (which is not a constant but varies significantly with pressure and temperature), then you could fit that data to the vdW equation and extract specific values for the vdW constants.
 

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