Viscosity Coefficients of KCl, NaCl, NaI, KNO 3 , LiNO 3 , NaBPh 4 and Bu 4 NI in Water - Dimethyl Sulfoxide Binary Mixtures With a Low Organic Solvent Content

In this work the viscosities of KCl, NaCl, NaI, KNO₃, LiNO₃, NaBPh₄ and Bu₄NI solutions (from ~0.01 mol dm^–3 to ~0.05 mol dm^–3) in water (1) + dimethyl sulfoxide (DMSO) (2) binary mixtures with mole fractions of DMSO, <i>x</i>₂ = 0.01, 0.02, 0.05, 0.075, 0.10 and 0.15, were determined at 298. 15 K. The viscosities measured were used to evaluate the viscosity B-coefficients by means of Jones-Dole's equation. The results obtained allowed us to determine the values of <i>B</i>_± coefficients for individual ions using the assumption about the equality B(Bu₄N⁺) = B(BPh₄^–). All the results have been discussed in terms of ion-solvent interactions.

Abstract licence: CC BY

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