New High-Density Equation of State for Gases

A new equation of state is proposed for the high-density region of gases. This equation is applied to the recent measurements of a number of gases and fits well within experimental error. The equation is characterized by five constants: three which are substance and temperature dependent, and two which are both substance and temperature independent. Values of all constants are given for the gases considered. Two liquid isotherms are also examined and also are fit by the equation, as are the calculated isotherms for soft spheres and Lennard-Jones spheres.