Viscosities and Densities of Halide Salts in Dimethylsulfoxide + Water from t = (25 to 45) °C

Abstract

The relative viscosities and densities for lithium bromide (LiBr) and sodium bromide (NaBr) were measured in dimethylsulfoxide (DMSO), water, and DMSO + water at temperatures from (25 to 45) °C. The estimated uncertainty of the measurements was ± 0.003 for relative viscosities and ± 0.0004 for densities. The data have been analyzed using the Jones−Dole equation. The Jones−Dole B-coefficients of these electrolytes were derived and the estimated uncertainty was ± 0.002. The values of the B-coefficients indicated that the salts behave as structure makers in DMSO, while in H2O and DMSO + H2O mixtures, the B-coefficient values were less positive showing a weaker structure-making effect.

Densities and Viscosities of Rubidium Bromide in Dimethyl Sulfoxide + Water Mixtures in the Temperature Range t = (25 to 45) °C

“…The solvents in which negative B values are found , all have molecules capable of forming hydrogen bonding in three dimensions, and water is the prime example. The values of the B -coefficients of the reference salts from our previous papers , are presented in Table , which also coincide with the literature values for similar substances …”

“…The measured physical parameters like densities (ρ o ) and viscosities (η ο ) for DMSO, water (H 2 O), and DMSO + H 2 O mixtures containing w 1 = (0, 0.2, 0.4, 0.5, 0.6, 0.7, and 1) % DMSO for temperatures of (25, 30, 35, 40, and 45) °C and the values of densities of pure water of this study are compared with the literature values and are reported in Table . The data used in this study for densities (ρ o ) and viscosities (η ο ) of the pure solvents H 2 O, DMSO, and DMSO + H 2 O mixtures are the same as used in our previous study …”

“…In our previous papers, the emphasis was on two factors: (1) the variation of temperature and (2) the variation in concentration. The ion−solvent interaction studies of lithium bromide (LiBr) and other salts in dimethyl sulfoxide (DMSO), water, and DMSO + water at 25 °C and at various temperatures with their activation energies were reported. , In continuation of this work, in this study the densities and viscosities of RbBr in DMSO + H 2 O mixtures of different compositions are reported as functions of concentration and temperature . In the present study prominence is given to the size of ions, as the size of the rubidium ion is comparatively larger than the size of lithium and sodium.…”

“…7,8 In continuation of this work, in this study the densities and viscosities of RbBr in DMSO + H 2 O mixtures of different compositions are reported as functions of concentration and temperature. 9 In the present study prominence is given to the size of ions, as the size of the rubidium ion is comparatively larger than the size of lithium and sodium. Therefore, viscosity measurements of solutions of rubidium bromide in DMSO, water, and DMSO + water mixtures are reported over the concentration range of 10 -3 mol • L -1 to near saturation.…”

Ion Association and Solvation Behaviour of Nickel(II) Complexes in Binary Mixtures of DMSO-H2O at Different Temperatures

“…Knowledge of electrolyte solution is found to be helpful for various electrochemical and technical investigations [1][2][3][4]. Dimethyl sulphoxide is a polar aprotic solvent that has applicable properties in electrochemical systems [5,6]. Attentiveness of dimethylsulfoxide is due to the broad use of DMSO-H 2 O mixture as solvents and reaction media.…”