One of this equation's successors used temperature-dependent omega coefficients and is more useful for liquid-phase enthalpies.
One of this equation's successors used temperature-dependent omega coefficients and is more useful for liquid-phase enthalpies. Studied at high pressures by Zudekevitch and Joffe, Peneloux and Rouzy introduced a constant to this equation so that it would hold better for hydrocarbon chains of greater than about ten carbons. Many improvements on this equation use Pitzer's acentric factor so that it will hold better for substances in the liquid phase. The Peng-Robinson equation is one notable improvement as is the Soave modification.  The van der Waals correction parameter for molecular attraction is divided by the square root of temperature in this equation. For 10 points, identify this two-parameter, cubic equation of state that is just one of many improvements on the ideal gas law.
One of this equation's successors used temperature-dependent omega coefficients and is more useful for liquid-phase enthalpies.
{Redlich}-{Kwong} equation of state (Prompt on {RK}-{EOS}, should that come up)