**Compressibility Factor Charts**

The compressibility factor chart plots the compressibility factor Z, equal to PV/RT, where V is the volume per mole, versus the reduced pressure P_{r} for several values of the reduced temperature T_{r}. The reduced pressure and temperature are defined by P_{r} = P/P_{C} and T_{r} = T/T_{C}, respectively, where P_{C} is the critical pressure and T_{C} is the critical temperature. Use buttons to select one of five molecules, and move the black dot to display the compressibility factor curve (blue) for any value of T_{r} between 1.0 and 1.8. The Z and P_{r} values for the location of the black dot are displayed on the chart. For an ideal gas, Z = 1 (green line).
Download the CDF file to view the simulation using the free Wolfram CDF player. |