Speed Of Ultrasound And Thermodynamic Properties Of 1-Butanol In Binary Liquid Mixtures At 293.15 K

The speeds of ultrasound in and densities of binary solutions of 1-butanol in hexane and cyclohexane were measured on the whole concentration range at 293.15 K. The experimental results in connection with literature data were used to calculate the isothermal compressibility coefficients and isochoric molar heat capacities for the pure components, as well as the excess molar volumes, excess adiabatic compressibilities, free volumes and the free intermolecular lengths for the binaries under test. The dependences of the excess properties on the mixture composition were compared and discussed in terms of the free intermolecular length and other factors affecting the solvation and self-association effects.