Speed of sound, viscosity, and refractive index of multicomponent systems: analysis of experimental data from the Bertrand–Acree–Burchfield equation

Abstract

The speed of sound in and the viscosity and refractive index of two ternary mixtures (I) toluene + n-heptane + n-hexane and (II) cyclohexane + n-heptane + n-hexane, and six binary combinations of these constituents have been measured experimentally. The excess values of these properties are calculated and the results are analysed using the Bertrand–Acree–Burchfield (BAB) model. All the experimental and theoretical values are in fairly reasonable agreement.