Acoustic and Volumetric Properties of Binary Ethanol and Cyclohexane Solutions at 293.15k

The speed of ustrasound is and densities of ethanol + syclohexane mixtures were measured in the whole concentration range at 293.15K. The adiabatic compressibility coefficients and excess molar volumes, as well as the mean molecular radii, free intermolecular lenght and internal pressures were determined for the binaries. The dependance of the exess molar volumes and exess internal pressures on the mixture composition were compared and discussed in terms of the free intermolecular lenght and other factors affecting the self-association of the athanol and structural changes of the solvent.