On the equation of state of argon and organic liquids

Abstract

The results of a statistical theory oriented towards and extensively applied to chain molecular fluids are further examined, with a twofold purpose in mind: First, in order to explore the validity of the theory for monomer‐type liquids. Secondly, to examine the behavior of the parameter 3c, the number of effectively external degrees of freedom per molecule, in instances where a priori assignments of this number may be feasible. The agreement between experimental and theoretical isotherms and isobars is satisfactory over a wide range of temperatures and pressures for the three typical systems investigated, viz., argon, carbon tetrachloride, and benzene. It is noteworthy in this connection, that the linear relation between 1nV and T^3/2 at atmospheric pressure observed earlier, retains its validity for the organic liquids. As for the numerical values of c, they turn out to be smaller than anticipated.