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Chemistry LibreTexts

1: Fundamental 1 - Measurable Properties

  • Page ID
    236422
    • 1.1: Non-Ideal Gas Behavior
      Gas molecules possess a finite volume and experience forces of attraction for one another. Consequently, gas behavior is not necessarily described well by the ideal gas law. Under conditions of low pressure and high temperature, these factors are negligible, the ideal gas equation is an accurate description of gas behavior, and the gas is said to exhibit ideal behavior. The van der Waals equation is a modified version of the ideal gas law that can be used to account for the non-ideal behavior.
    • 1.2: Virial Equations
      Expanding the compressibility factor to a polynomial in the pressure results in a better description of real gas behavior. The values for the parameters of this expansion are often tabulated for each gas independently.

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