Studies on the viscosity behavior of alkali halides in aqueous D-xylose solution

The viscosity behavior of ternary systems comprising sodium or potassium halides (concentration range 0.125–3M in aqueous D-xylose solution (0.4M at 25, 30, 35, and 40° has been determined. It is found that Moulik's equation holds for such concentrated solutions beyond the Einstein region. Furthermore, the “effective” rigid molar volume and the apparent B coefficient have been computed from the relative viscosity data by employing the Breslau-Miller treatment. The results are explained in terms of the structure-making or -breaking effects in solution by analyzing the values of the apparent B coefficient obtained for different temperatures.