Determination of intermolecular potential functions from macroscopic measurements

Abstract

The second virial, adiabatie Joule-Thomson, viscosity, and diffusion coefficients predicted for a number of potentials are compared with those predicted for the (12, 6) potential. A quantitative picture, as a function of temperature, is obtained of the ability of each property to act as a probe of the potential function. The transport properties are found to be the most sensitive probes, the Joule-Thomson coefficient next, and the second virial coefficient least, the last property being essentially useless in the range 2.0 < T* < 8.0 on the (12, 6) reduced temperature scale.