Viscosities of dilute solutions of lithium bromide in binary mixtures of water + dimethyl sulfoxide (DMSO) have been measured in the composition range 0-85 mass % DMSO at 278.15 K and 0-100 mass % DMSO at 293.15 K. The viscosity data have been analyzed by the Jones-Dole equation. The viscosity B coefficients of LiBr are positive at both temperatures in the whole composition range of the mixed solvent. The ion-solvent interactions have been discussed.
Densities, viscosities, and refractive indices have been measured for
4-chlorotoluene + methyl acetate,
+ethyl acetate, and +propyl acetate at (293.15, 298.15, and 303.15)
K. The results are correlated by
means of a Redlich−Kister type equation and discussed in terms of
molecular interactions. Excess volumes
have been derived.
Excess volumes (V®) of binary mixtures of ethyl acetate with toluene and its o-and p-chloro derivatives have been determined from density measurements from 283.15 to 303.15 K over the entire composition range. Excess volumes are negative for all mixtures at all temperatures. The V*• values are close to zero for the ethyl acetate + toluene system. The values decrease in the order toluene, o-chlorotoluene, and p-chlorotoluene. The effect of temperature on the excess volume is ( dVE/dT)p, being generally negative.
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