Ion–solvent interactions in water-rich binary mixtures. Part 2.—Viscometric behaviour of NaCl, NaBr, KCl, KBr and Bu4NBr in water + hexamethylphosphoric triamide mixtures at 25 and 35 °C

Abstract

The relative viscosities of NaCl, NaBr, KCl, KBr and Bu₄NBr have been measured at 25 and 35 °C in water + hexamethylphosphoric triamide mixtures at low percentages of organic cosolvent. Discussion of the B-coefficients of the Jones–Dole equation and of their dependence on temperature in the binary mixtures allows us to highlight changes in the water structure as the percentage of organic cosolvent is increased.