Study of intermolecular interactions in binary mixtures of cyclohexane with 1-alkanols at 308 K

Densities, rho, viscosities, eta, and ultrasonic speeds, u, of pure cyclohexane, cyclohexanol, 1-octanol, 1-decanol and those of their binary mixtures with cyclohexane, as a common component, were measured at 308 K over the entire composition range. These experimental data were used to calculate the values of isentropic compressibility, K-s, intermolecular free length, L-f, acoustic impedance, Z, relative association, R-A, molar sound speed, R-m, molecular association, M-A, excess volume, V-E and deviations in isentropic compressibility, DeltaK(s), viscosity, Deltaeta, and ultrasonic speed, Deltau, at all mole fractions of cyclohexane. These parameters, especially excess functions, are found to be quite sensitive towards the intermolecular interactions in liquid mixtures. Theoretical values of viscosities and ultrasonic speeds of the binary mixtures were calculated using different empirical relations and theories. The relative merits of these relations and theories were discussed.