Equilibrium properties of polar gases. Part 2.—The second dielectric virial coefficients of some polar gases

Abstract

The second dielectric virial coefficients ℬ for five polar gases CHF3, CHF2Cl, CH3Cl, CH2:CF2 and (CH3)2O were measured at 30, 50 and 70°C. for the gases CF3Cl and CF2Cl2, ℬ was measured at 50°C only. The experimental results were compared with those predicted by the forms of intermolecular potential that have been suggested for polar gases. None of these proves to be entirely satisfactory.