Reduced Temperatures for the Liquid State. General Equations for the Orthobaric Densities as Functions of the Reduced Temperature

摘要

The reduced temperature thgr; proposed by Bauer, Magat, and Surdin for the liquid state is presented and their work is reviewed. Attention is directed to the fact that a number of empirical power law equations that represent the variation of a property of a liquid as a function of the van der Waals reduced temperature are directly transformable into analogous functions of thgr;. General equations are derived for the variation of the orthobaric liquid and vapor densities as function of the reduced temperature.