Abstract
The method of Neff and McQuarrie based on the perturbation theory of Barker and Henderson was applied to the calculation of Henry''s constants for 22 systems of normal fluids. In the present study, the second-order term in the perturbation expansion was included to derive an equation for Henry''s constant.
To evaluate the pair potential, a set of "effective" potential parameters of Kihara potential was determined anew for each substance from the generalized P-V-T relations given by Pitzer et al. These parameters were well correlated with linear functions of acentric factor.
By use of these "effective" pair potentials, Henry''s constants calculated by the perturbation theory agreed well with experimental values over a wide range of temperature.
