Abstract
The theoretical Naumann equation of state is used to determine the influence of molecular size and shape on thermodynamic properties of binary fluid mixtures. Comparisons are made with results obtained from similar equations of state and from computer-simulation data. Calculations are presented for excess Gibbs energies, excess volumes, Henry's constants, and activity coefficients at infinite dilution for mixtures of non-attracting, hard, convex bodies which differ in size and/or shape. Calculated properties are more sensitive to the size ratio than to shape differences. However, packing effects governed by molecular shape are important in the calculation of thermodynamic properties at high fluid densities.
Published Version
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