Engineering thermodynamics/Compressibility factor

$Z=\frac{Pv}{RT}$ is plotted against $P_r=P/P_{cr}$ for various values of $T_r=T/T_{cr}$

Wikipedia resources

• Compressibility factor (explains the figure to the right)

• Theorem of corresponding states
• Van der Waals equation
• Ideal gas law (for beginners)
• Kinetic theory (advanced discussion of the ideal gas law)

Wikiversity resources

• Gases and gas laws (underdeveloped)

Matlab resources

• Compressibility Factor Calculator by Chad Greene (28 Mar 2012 --Updated 06 Nov 2012)
  • Calculates the compressibility factor of a gas using the Van der Waals equation of state.
  • alternative link from mathworks
• Z factor by hossein yousefi (16 Dec 2010)