Abstract
Abstract It is shown that for a wide variety of binary systems, limiting activity coefficients can be related through pure-component properties and, for mixtures containing one alcohol, through a self-association, chemical equilibrium constant. The proposed relation introduces two modifications into the van Laar-Hildebrand-Scatchard theory. The modifications are a molecular-shape correction to account for molecular nonsphericity, and a “chemical” correction to account for self-association of alcohols. Calculated and experimental results are compared for 297 data points for 65 binary systems.
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