Second-order excess derivatives for liquid mixtures of non-electrolytes

Densities, iseutropic compressibility coefficients, and isobaric molar heat capacities of the cyclohexane + n-tetradecane binary system were measured throughout the composition range at atmospheric pressure and temperatures o f 288.15, 293.15, 298.15 and 308.15 K. Density data were used to obtain the rmal expansion coefficients and, via appropriate thermodynamic relations, i sothermal compressibility coefficients and isochoric molar heat capacities. The excess quantities for these properties were calculated using the ideal ity criterion of Benson and Kiyohara. The isothermal compressibility coeffi cients obtained are compared with reported values in order to assess the re liability of the procedure. The loss of the orientational order in n-tetrad ecane affects the excess properties of the mixture. (C) 2000 Elsevier Scien ce B.V. All rights reserved.