European Journal of Biomedical and Pharmaceutical Sciences

THERMODYNAMIC, EXCESS AND OPTICAL STUDIES ON THE INTERMOLECULAR INTERACTIONS OF BINARY LIQUID MIXTURES OF 1, 4-DIOXANE WITH 1-ALKANOLS AT 303.15K

*Dhirendra Kumar Sharma and Suneel Kumar

ABSTRACT

The densities, ρ, speeds of sound, u and refractive indices, n of binary mixtures of 1,4-dioxane with 1-alkanols including those of pure liquids, over the entire composition range were measured at temperatures 303.15K and atmospheric pressure. In this paper presents experimental data for density (ρ), ultrasonic velocities (u) and refractive indices (n) of pure 1,4-dioxane, 1-propanol, 1-butanol, 1-hexanol, 1- octanol and their binary mixtures with 1,4-dioxane as a common component over the whole composition range at 303.15 K. The molecular refraction (Rm), excess molecular refraction () and excess molar volume (VE) were calculated from the experimental data. The variations of these parameters with composition and temperature have been discussed in terms of intermolecular interactions prevailing in these mixtures. The thermodynamic properties have been discussed in terms of nature of molecular interactions between the components of the mixture. The results are discussed in term of molecular interactions between the components of the binary mixtures. Excess molar volumes have also been estimated from measurements of refractive indices.

Keywords: Density, ultrasonic velocity, molar volume, mass refraction, refractive indices, molecular interaction.