Evaluation of Thermo-Acoustic Parameters of Some Binary Liquid Mixtures from Volume Expansivity Data

Researches have previously shewn that the contribution of internal pressure and the temperature coefficient of volume to the sound velocity in the condensed phase is significant and that volume expansivity is the controlling factor for satisfactory description of the various parameters which describe the thermo-acoustic properties of polycrystalline solid, metal, alkali halide salt, polyatomic ionic liquid and organic liquid mixtures. Such a description employs only volume expansivity data. From the volume expansivity data the isothermal, isobaric and isochoric acoustical parameters, Moelwyn-Hughes parameter, fractional free volume, Huggin's parameter, Sharma's parameters and repulsive exponent in Mie's potential have been evaluated in the mixtures of Cyclohexanone+Heptane, Cyclohexanone+Hexane, Cyclohexanone+Octane and Cyclohexanone + 2, 2, 4-trimethyl pentane at 308.15 K for the entire range of mole fraction.