Journal of Chemical and Engineering Data, Vol.48, No.3, 712-719, 2003
Thermodynamics of mixtures involving some linear or cyclic ketones and cyclic ethers. 2. Systems containing tetrahydropyran
Densities rho, refractive indices n, and volumetric heat capacities C-p/V have been measured at 298.15 K over the whole concentration range for the binary mixtures {tetrahydropyran + 2-pentanone, + 2-heptanone, or + cyclopentanone}. From the experimental data, excess molar volumes V-E, excess molar refractions R-E, and excess molar isobaric heat capacities C-p(E) were calculated. Deviations of refractive index from ideality were determined by using a deviation function defined on a volume fraction basis, Deltan(phi). Excess molar enthalpies H-E have been measured at the same temperature for the systems {tetrahydropyran + 2-pentanone, + 2-heptanone, + cyclopentanone, or + cyclohexanone}. The discussion of these quantities entails a comparison with the results obtained in part I of this series for a homologous set of systems containing tetrahydrofuran.