Abstract
An approach based on the conception that the surface layer of a surfactant solution is a phase with a finite thickness is suggested for estimating the parameters of γ-models of binary mixtures from their surface tension data. Experimental surface tension data are presented for the acetone-water, methanol-water, ethanol-water, and isopropanol-water systems over the entire concentration ranges. The parameters of the Margules model have been determined for these solutions.
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