DENSITIES, SPEEDS OF SOUND AND ISENTROPIC COMPRESSIBILITIES OF BINARYAND TERNARY MIXTURES CONTAINING BENZENE, CYCLOHEXANE AND HEXANE AT 298.15 K

Densities, rho, and speeds of sound, u, have been measured for the ter nary mixture {benzene + cyclohexane + hexane} and the corresponding bi nary mixtures {benzene + cyclohexane}, {benzene + hexane} and {cyclohe xane + hexane}, at the temperature 298.15 K. Using these results, the isentropic compressibilities, kappa(s), the excess isentropic compress ibilities, kappa(s)(E), and the speeds of sound deviations, Delta u, h ave been calculated for both the binary mixtures and the ternary syste m. Excess isentropic compressibilities, kappa(s)(E) and the speeds of sound deviations, Delta u, have been fitted to the Redlich-Kister equa tion in the case of binary mixtures, while the equation of Cibulka was used to fit the values relating to the ternary system. The empiric eq uations of Redlich-Kister, Tsao-Smith, Kohler and Colinet have been ap plied in order to predict the kappa(s)( )and Delta u of ternary mixtur es from the binary contributions.