Viscosities and densities of binary liquid mixtures of m-cresol with substituted anilines. Part 3

1985 ◽  
Vol 63 (5) ◽  
pp. 1024-1030 ◽  
Author(s):  
Ramamurthy Palepu ◽  
Joan Oliver ◽  
Brian MacKinnon
Keyword(s):  
Excess Volume ◽  
Binary Systems ◽  
Partial Molar Volumes ◽  
Liquid Mixtures ◽  
Molar Free Energy ◽  
Substituted Anilines ◽  
Binary Liquid ◽  
Excess Partial Molar Volume ◽  
Free Energy Of Activation ◽  
Different Temperatures

Densities and viscosities were determined for the binary systems of m-cresol with aniline, N-methylaniline, N, N-dimethylaniline, N-ethylaniline, and N, N-diethylaniline at five different temperatures. From the experimental results, the excess volume, excess viscosity, excess molar free energy of activation of flow, excess partial molar volume, and partial molar volumes were calculated. Also various thermodynamic parameters of activation of flow were calculated from the dependence of viscosity on temperature. The deviations from ideality of thermodynamic and transport functions are explained on the basis of molecular interactions between the components of the mixture.

Viscosities and thermodynamics of viscous flow of binary liquid mixtures of 2-(2-butoxyethoxy)ethanol with aniline and N-alkyl anilines

1992 ◽  
Vol 70 (10) ◽  
pp. 2645-2649 ◽  
Author(s):  
Paul Wiseman ◽  
Murray Heggie ◽  
Ramamurthy Palepu
Keyword(s):  
Liquid Mixtures ◽  
Viscosity Data ◽  
Specific Interactions ◽  
Molar Free Energy ◽  
Substituted Anilines ◽  
Ideal Behavior ◽  
Binary Liquid ◽  
Free Energy Of Activation ◽  
Different Temperatures ◽  
High Degree

Viscosities and densities of binary mixtures containing 2-(2-butoxyethoxy)ethanol with aniline and N-alkyl-substituted anilines have been determined at five different temperatures over the complete concentration range. Excess volumes, viscosities, and excess molar free energy of activation of flow were calculated and the departure from ideal behavior is explained on the basis of specific interactions between the components in these mixtures. McAllister's approach correlates the viscosity data with a significantly high degree of accuracy for all these systems.

Viscosities, Densities, and Refractive Indices of Binary Liquid Mixtures

1971 ◽  
Vol 49 (15) ◽  
pp. 2605-2609 ◽  
Author(s):  
Miguel Katz ◽  
Pedro W. Lobo ◽  
A. Sancho Miñano ◽  
Horacio Sólimo
Keyword(s):  
Free Energy ◽  
Hydrogen Bonds ◽  
Excess Volume ◽  
Liquid Mixtures ◽  
Refractive Indices ◽  
Dispersion Forces ◽  
Molar Free Energy ◽  
Excess Viscosity ◽  
Binary Liquid ◽  
Free Energy Of Activation

The viscosities, densities, and refractive indices at 25, 30, 35, and 40 °C were determined for the systems: aniline + toluene (A + T), N,N-dimethylaniline + toluene (DMA + T), and aniline + n-butanol (A + B). From the experimental results the excess volume, excess viscosity, and excess molar free energy of activation of flow were calculated. The deviations from ideality for the excess thermo dynamic functions are more important for the systems (A + T) and (A + B) than for (DMA + T). This fact is explained by the existence of dispersion forces in the mixture and by the presence of hydrogen bonds in pure aniline and pure butanol.

scholarly journals Excess volume and viscosity of binary liquid acid–base mixtures

1976 ◽  
Vol 54 (20) ◽  
pp. 3125-3129 ◽  
Author(s):  
Horacio N. Sólimo ◽  
Roque Riggio ◽  
José A. Espíndola ◽  
Silvia del V. Alonso ◽  
Miguel Katz
Keyword(s):  
Free Energy ◽  
Excess Volume ◽  
Refractive Indices ◽  
Molar Free Energy ◽  
Acid Base ◽  
Excess Viscosity ◽  
Liquid Acid ◽  
Binary Liquid ◽  
Excess Partial Molar Volume ◽  
Free Energy Of Activation

Densities, viscosities, and refractive indices at 25 °C were determined for the systems: o chlorophenol + N,N-dimethylaniline, o-chlorophenol + aniline, o-chlorophenol + m-toluidine, and o-chlorophenol + pyridine. From the experimental results the excess volume, excess viscosity, excess molar free energy of activation of flow, and the excess partial molar volume were calculated. There is evidence of complex formation between o-chlorophenol and the four bases.

Thermodynamic Properties of Binary Liquid Acid–Base Mixtures

1975 ◽  
Vol 53 (9) ◽  
pp. 1258-1262 ◽  
Author(s):  
Horacio N. Sólimo ◽  
Roque Riggio ◽  
Franco Davolio ◽  
Miguel Katz
Keyword(s):  
Propionic Acid ◽  
Excess Volume ◽  
Excess Enthalpy ◽  
Refractive Indices ◽  
Molar Free Energy ◽  
Acid Base ◽  
Excess Viscosity ◽  
Binary Liquid ◽  
Free Energy Of Activation ◽  
Excess Thermodynamic Functions

Viscosities, densities, refractive indices, and enthalpies at 25 °C were determined for the systems: propionic acid + aniline (PA + A ), propionic acid + N,N-dimethylaniline (PA + DMA ), and propionic acid + pyridine (PA + P). From the experimental results the excess volume, excess viscosity, excess molar free energy of activation, and excess enthalpy were calculated. The deviations from ideality for the excess thermodynamic functions are more important for the systems PA + A and PA + P than for PA + DMA. There is evidence for complex formation between propionic acid and aniline in the following molar relation: 2CH3CH2COOH·C6H5NH2.

Volumetric, Viscometric, and Ultrasonic Properties of Liquid Mixtures of Cyclohexane with Alkanols at Different Temperatures

2010 ◽  
Vol 65 (8-9) ◽  
pp. 749-760 ◽  
Author(s):  
Anwar Ali ◽  
Shadma Tasneem ◽  
Firdosa Nabi
Keyword(s):  
Composition Range ◽  
Partial Molar Volumes ◽  
Isentropic Compressibility ◽  
Liquid Mixtures ◽  
Excess Gibbs Free Energy ◽  
Common Component ◽  
Free Energy Of Activation ◽  
Different Temperatures ◽  
Pure Cyclohexane ◽  
Partial Molar Compressibilities

The densities (ρ), viscosities (η), and ultrasonic speeds (u) of pure cyclohexane, 1-butanol, 2- butanol, and those of their binary mixtures, with cyclohexane as common component, covering the whole composition range have been measured at 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K. From the experimental data the excess molar volume (VE), deviations in isentropic compressibility (Δks), deviations in viscosity (Δη), deviations in ultrasonic speed (Δu), deviations in acoustic impedance (ΔZ), deviations in internal pressure (ΔPi), excess Gibbs free energy of activation (ΔG*E), entropies (ΔS*), and enthalpies (ΔH*) of activation of viscous flow have been determined. The sign and magnitude of these parameters were found to be sensitive towards interactions prevailing in the studied systems. Partial molar volumes (V0φ,2) and partial molar compressibilities (K0φ,2) of 1-butanol and 2-butanol in cyclohexane have also been evaluated. Moreover, VE values were theoretically predicted by using Flory’s statistical theory. The variations of derived parameters mentioned above with composition offer a convenient method to study the nature and extent of interactions between the component molecules of the liquid mixtures, not easily obtained by other means

scholarly journals Acoustical Studies on Molecular Interactions in Binary Liquid Mixtures at 303 K

2009 ◽  
Vol 6 (4) ◽  
pp. 1150-1152 ◽  
Author(s):  
R. Uvarani ◽  
J. Sivapragasam
Keyword(s):  
Ultrasonic Velocity ◽  
Molecular Interactions ◽  
Molecular Interaction ◽  
Binary Systems ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Ultrasonic Technique ◽  
Acoustical Parameters ◽  
Binary Liquid ◽  
Excess Parameters

Molecular interaction studies using ultrasonic technique in the binary liquid mixtures of cyclohexanone witho-cresol andp-cresol have been carried out at 303 K. Using the measured values of ultrasonic velocity, density and viscosity, acoustical parameters and their excess values are evaluated. From the properties of these excess parameters the nature and strength of the interactions in these binary systems are discussed.

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