Densities and Excess Molar Volumes of the Ternary System (1,4-Dioxane + 2-Propanol + 1,1,2,2-Tetrachloroethane) at T = 288.15–318.15 K and at Atmospheric Pressure: Experimental Measurements and Prigogine–Flory–Patterson Modeling
Résumé
_____ Excess molar volumes for 1,4-dioxane + 2-propanol + 1,1,2,2-tetrachloroethane ternary mixture and for the constituent binaries, were determined from density measurements, over the entire composition range, at four temperatures comprising between [288.15 and 318.15] K and at atmospheric pressure. The ether containing binary mixtures present positive excess molar volume, V E , with the alkanol, and negative V E values, with the chloroalkane, over the whole composition and working temperature ranges. As the temperature increases, the V E magnitude increases, for 1,4-dioxane + 2-propanol, whereas it decreases for 1,4-dioxane + 1,1,2,2-tetrachloroethane. For 2-propanol + 1,1,2,2-tetrachloroethane mixture, sigmoidal-V E curves are observed and the V E increases as the temperature increases. Sigmoidal-E 123 V curves are observed, also, for 1,4-dioxane + 2-propanol + 1,1,2,2-tetrachloroethane ternary mixture. The equations of Redlich-Kister and of Cibulka, were used to fit the experimental excess molar volume data, for the investigated binary and ternary mixtures, respectively. In order to provide more informations on solute-solvent interactions, for the studied binary mixtures, the partial molar volumes and excess partial molar volumes, are calculated over the entire composition range and at infinite dilution, at (288.15 K and 318.15) K. The Prigogine-Flory-Patterson theory (PFP model) was applied to the 1,1,2,2-tetrachloroethane containing binary mixtures.
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article JCED 2019 Densities and Excess Molar Volumes of the ternary system (1,4-Dioxane + 2-Propanol + 1,1,2,2-Tetrachloroethane)(.pdf (915.96 Ko)
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