Naslov
Viscosity B-Coefficient for Sodium Chloride in Aqueous Mixtures of 1, 4-Dioxane at Different Temperatures

Autori
Tomaš, Renato ; Jovanović, Toni ; Bešter-Rogač, Marija

Izvornik
Acta chimica Slovenica (1318-0207) 62 (2015), 3; 531-537

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Sodium chloride; water–1; 4-dioxane binary mixtures; viscosity data; viscosity B-coefficient; ions-solvent interactions

Sažetak
Viscosities of sodium chloride solutions in water–1, 4-dioxane binary mixtures with mole fractions of 1, 4-dioxane, xD = 0.05, 0.10, 0.15 and 0.20, in the temperature range from 278.15 to 318.15 K were determined. The relative viscosity data have been analyzed and interpreted in terms of the rearranged Jones-Dole equation, (hr – 1) – Ac1/2 = Bc. The viscosity A-coefficients were calculated from Falkenhagen and Vernon theory by help of the literature limiting ionic conductivity data and B-coefficients were estimated from linear plots. All B-coefficients obtained for NaCl in water–1, 4-dioxane binary mixtures are positive at all temperatures. These data were compared with the data for NaCl in aqueous medium at different temperatures reported in literature. The ion-ion, ion-solvent and solvent-solvent interactions have been discussed.

Izvorni jezik
Engleski

Napomena
Student Toni Jovanović (his mentor was Assoc. Professor Dr. Renato Tomaš) is grateful to Erasmus mobility grant enabling the research cooperation at University of Ljubljana and Dr. Bojan Šarac for all his help. The financial support from the Slovenian Research Agency through Grant No.P1-0201 and J1-0103-4148 is gratefully acknowledged. Professor Dr. Marija Bešter-Rogač would like to acknowledge Professor Dr. Jože Koller as a kind co-worker.

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