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Viscosity coefficients of KCl, NaCl, NaI, KNO3, LiNO3, NaBPh4 and Bu4NI 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 solutons (from 0.01 moldm-3 to 0.05 moldm-3) in water(1) + dimethyl sulfoxide (DMSO) (2) binary mixtures with mole fractions of DMSO, x2= 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-coeffients by means of Jones-Dole's equation.The results obtained allowed us to determine the values of B-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.

viscosity of solutions, water+dimethyl sulfoxide (DMSO) mixtures, Jones-Dole equation, viscosity B-coefficients

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