Thermodynamic Investigation of Molecular Interactions in 1,3-Dioxolane or 1,4-Dioxane+Benzene or Toluene+Formamide or +N,N-Dimethylformamide Ternary Mixtures at 308.15 K and Atmospheric Pressure

Thermodynamic and topological investigations of molecular interactions in binary and ternary mixtures containing 1-methyl pyrrolidin-2-one at T=308.15K

“…The change in liquid level of dilatometer capillary was measured with a cathetometer that could read to ±10 À5 m. The temperature of the water bath, in which the dilatometer was placed, was maintained by toluene regulator. The uncertainty in the measurement of temperature is 0.01 K [9,10] The uncertainties in the measured V E values are 0.5%.…”

“…Such parameters along with standard deviations, rðX E ijk Þ (X = V or j S ) expressed by the relation: TABLE 1 Comparison of densities, q and speeds of sound, u of pure liquids along with their literature values at T = (298.15 and 308.15) K. Also included are the parameters, isobaric coefficient of thermal expansion, a P and molar heat capacities of pure components, C p . where m is the number of data points and n is the number of adjustable parameters of equation (10) are recorded in tables 2 and 3, respectively. The representative surfaces for {NMP (i) + benzene (j) + methylbenzene (k)} ternary mixtures generated by V E ijk and ðj E S Þ ijk values predicted via equation (10) are shown in figures 4 and 5, respectively.…”

“…where m is the number of data points and n is the number of adjustable parameters of equation (10) are recorded in tables 2 and 3, respectively. The representative surfaces for {NMP (i) + benzene (j) + methylbenzene (k)} ternary mixtures generated by V E ijk and ðj E S Þ ijk values predicted via equation (10) are shown in figures 4 and 5, respectively.…”

“…Binary or ternary mixtures containing 1-methyl pyrrolidin-2-one, or benzene, or methyl benzene, or cyclohexane are interesting liquid mixtures as 1-methyl pyrrolidin-2-one is used in petrochemical interesting the extraction of aromatics and in the removal of acetylene. In previous papers [1][2][3][4], the topology of the constituents of mixtures has been employed successfully to determine excess molar volume, excess molar enthalpy, excess isentropic compressibility of binary and ternary mixtures. In the present work, we report here excess molar volume, excess molar enthalpy, and speed of sound of {1-methyl pyrrolidin-2-one (i) + benzene (j) + methyl benzene, or cyclohexane (k)}; {1-methyl pyrrolidin-2-one (i) + methyl benzene (j) + cyclohexane (k)} ternary and excess molar volume, excess molar enthalpy, and speed of sound of binary mixtures.…”

Thermodynamic properties of binary mixtures of tetrahydropyran with pyridine and isomeric picolines: Excess molar volumes, excess molar enthalpies and excess isentropic compressibilities

“…This has greatly stimulated the need for extensive information about thermodynamic properties of mixtures containing cyclic ether. In our systematic investigations of thermodynamic properties of binary and ternary mixtures containing cyclic ether, excess molar volumes, V E , excess molar enthalpies, H E , excess Gibbs free energies, G E and excess isentropic compressibilities, Ä E S data of binary [1][2][3] and ternary [4,5] mixtures have been analyzed in terms of Graph theory (which involves the topology of a molecule). In continuing with our study on thermodynamic properties of cyclic mixtures, we report here the densities, speeds of sound and excess…”