Abstract
The activity coefficients at infinite dilution , γ13∞ (the subscript 1 and 3 correspond to solute and solvent, respectively), for 21 solutes, including alkane, cycloalkane, alkene, aromatic compounds, alcohol, ester, ketone, and halogenated hydrocarbons, in four solvents, that are the saturated fatty acids: capric (decanoic) acid, lauric (dodecanoic) acid, myristic (tetradecanoic) acid, and palmitic (hexadecanoic) acid, were determined by gas–liquid chromatography at temperatures from 314.10K to 358.33K. Comparison with previously published for selected solutes in palmitic (hexadecanoic) acid were also performed. The values of the partial molar excess Gibbs free energy, ΔG13∞, enthalpy, ΔH13∞, and entropy, ΔS13∞, at infinite dilution were calculated from experimental γ13∞ values obtained over the temperature range. Results obtained in this work allow a more accurate description of the real behavior of fatty systems.
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