Excess internal pressure, excess energy of vaporization and excess pseudo-Gruneisen parameter of binary, ternary and quaternary liquid mixtures

Densities, viscosities and ultrasonic velocities were measured for four binary, one ternary and one quaternary liquid systems at 298.15 K to obtain values of excess internal pressure and excess energy of vaporization. Values of pseudo-Gruneisen parameter and excess pseudo-Gruneisen parameter have been evaluated theoretically for two quaternary liquid systems. A quantitative relationship has been established among these thermodynamic properties with the help of relevant expressions. Study of molecular interaction has been made in the light of excess thermodynamic functions. (c) 2007 Elsevier B.V. All rights reserved.