Densities, Viscosities, and Refractive Indices of Binary Mixtures of Benzene with Isomeric Butanols at 30°C

Abstract

The densities, ρ, viscosities, η, and refractive indices, n, of binary mixtures of benzene with 1-butanol, 2-methyl-1-propanol, 2-butanol, and 2-methyl-2-propanol, including those of the pure liquids, were measured over the complete composition range at 30 • C. The dependence of ρ, η, and n on composition was checked by using an empirical relation. The experimental data were used to calculate excess molar volumes, V E , deviations in viscosity, η, excess free energies of activation of viscous flow, G * E , deviations in refractive index, n, apparent molar volumes, V φ,1 and V φ,2 , and partial molar volumes, V • 1 and V • 2 , of benzene in alcohols and alcohols in benzene, respectively, at infinite dilution. The variations of these parameters with composition and the effect of branching in alcohols were discussed from the point of view of intermolecular interactions in these mixtures.

Temperature Dependence of Densities and Excess Molar Volumes of the Ternary Mixture (1-Butanol + Chloroform + Benzene) and its Binary Constituents (1-Butanol + Chloroform and 1-Butanol + Benzene)

“…1b, the 1-butanol (1) + benzene (3) system shows positive V E values over the whole concentration range, also with V E values increasing with increasing temperature. Comparisons of our experimental results of V E for the 1-butanol (1) + benzene (3) system at (293.15, 298.15, 303.15, and 308.15) K with the data reported previously [8][9][10] show that our V E data are in very good agreement (for the maximum V E values, at x 1 = 0.35, the difference is less than 4% for all studied temperatures). Larger disagreements exist only for the case of data reported by Bhardway et al [11] at 308.15 K (nearly 15%).…”

“…For the binary mixtures the ρ and V E literature data cover the following temperatures: 303.15 K [7] for the 1-butanol (1) + chloroform (2) mixture and 293.15 K [8], 298.15 K [9], 303.15 K [10], and 308.15 K [9,11] for the 1-butanol (1) + benzene (3) mixture. Although literature V E data were reported at several temperatures for the 1-butanol (1) + benzene (3) system, no values of V E have been found for the entire temperature range studied here, especially for the 1-butanol (1) + chloroform (2) mixture.…”

Volumetric Behavior of Binary Mixtures of Alkoxyethanols and Some Selected Amines at 298.15 K

“…Strong and weak interactions between unlike molecules in mixtures lead to deviations from ideality. Deviations from ideality in binary liquid mixtures are usually associated with synergism and are attributed to differences in the chemistry and molecular architecture of the mixing solvents [8][9][10][11][12][13][14] as well as the experimental conditions such as temperature and the mixing ratios of the binary liquids.…”

Densities and Refractive Indices of Binary Mixtures of Benzene with Triethylamine and Tributylamine at Different Temperatures

“…15-318.15 K). In a continuation of our earlier work [11][12][13][14][15] on molecular interactions in nonaqueous binary liquid mixtures, we report here densities, and refractive indices of binary mixtures of benzene with TEA and TBA at 278. 15, 283.15, 288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K over the entire composition range expressed by the mole fraction, x 1 , of benzene.…”