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.