Speeds of sound, isentropic compressibilities, viscosities and excess molar volumes of cyclohexanol plus cyclohexane at 303.15 K

Isentropic compressibilities kappa(S), excess isentropic compressibilities kappa(S)(E), excess molar volumes V-E viscosity deviations Deltaeta and excess Gibbs energy of activation DeltaG*(E) of Viscous flow have been determined from measurements of speeds of sound u, densities rho and viscosities eta of cyclohexanol + cyclohexane binary mixture at 303.15 K and over the whole mole fraction range. The values of K-S(E) and Deltaeta are negative over the entire range of composition but the V-E plot is sigmoid with very small magnitude of V-E. The experimental speeds of sound in terms of collision factor theory and free length theory and the excess molar volumes in terms of associated solution theory with a Flory equation of state contribution described by Treszczanowicz and Benson.[Fluid Phase Equilib. 23 (1985) 117] and Heintz [Ber. Bunsen-Ges. Phys. Chem. 89 (1985) 172] have been analyzed. (C) 2004 Elsevier B.V. All rights reserved.