Thermodynamics Research Center / ThermoML | Thermochimica Acta

ABSTRACT

The excess molar volumes (VEm ), viscosity deviations ( ), and excess Gibbs energies of activation ( G*E) of viscous flow have been investigated from densities and viscosities measurements for three ternary mixtures 1-butanol + ethyl ethanoate + cyclohexane, 1-pentanol + ethyl ethanoate + cyclohexane, and 1- octanol + ethyl ethanoate + cyclohexane and four binaries at 303.15K and atmospheric pressure over the entire range of composition. The empirical equations due to Redlich Kister, Kohler, Rastogi et al., Jacob Fitzner, Tsao Smith, Lark et al., Heric Brewer, and Singh et al., have been employed to correlate VEm , , and G*E of ternary mixtures with their corresponding binary parameters. The results are discussed in terms of the molecular interactions between the components of the mixture. Further, the ERAS model has been examined to estimate VEm for the binary and ternary mixtures and the results arecompared with the experimental data.