Molecular Interaction Studies in Ternary Liquid Mixtures of Quinoline at Varying Temperatures

2013 ◽  
Vol 12 (7) ◽  
pp. 412-419
Author(s):  
Ch. Kavitha ◽  
Dr. A. Ratnakar ◽  
Dr. K. Narendra
Keyword(s):  
Experimental Data ◽  
Ultrasonic Velocity ◽  
Entire Range ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Acoustic Parameters ◽  
Viscosity Deviation ◽  
Free Energy Of Activation ◽  
Excess Parameters ◽  
Gibb’S Free Energy

Density r, Viscosity η, and ultrasonic velocity u, have been measured in pure Quinoline, o-cresol, m-cresol, p-cresol and methanol and in their ternary liquid mixtures with quinoline and methanol as common components at 303.15, 308.15, 313.15 and 318.15K over the entire range of composition. From these experimental data, various thermo-acoustic parameters such as excess molar volume VmE, excess ultrasonic velocity uE, viscosity deviation Δη and excess Gibb’s free energy of activation for viscous flow ΔG*E have been calculated. The deviation/excess parameters were plotted against the mole fraction of quinoline over the whole composition range. The observed negative and positive values of deviaiton/excess thermo-acoustic parameters were explained on the basis of intermolecular interactions present in these mixtures.

scholarly journals Molecular Interaction Studies in Ternary Liquid Mixtures of Quinoline at Varying Temperatures

2008 ◽  
Vol 4 (2) ◽  
pp. 412-419
Author(s):  
Ch. Kavitha ◽  
Dr. A. Ratnakar ◽  
Dr. K. Narendra
Keyword(s):  
Experimental Data ◽  
Ultrasonic Velocity ◽  
Entire Range ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Acoustic Parameters ◽  
Viscosity Deviation ◽  
Free Energy Of Activation ◽  
Excess Parameters ◽  
Gibb’S Free Energy

Density r, Viscosity η, and ultrasonic velocity u, have been measured in pure Quinoline, o-cresol, m-cresol, p-cresol and methanol and in their ternary liquid mixtures with quinoline and methanol as common components at 303.15, 308.15, 313.15 and 318.15K over the entire range of composition. From these experimental data, various thermo-acoustic parameters such as excess molar volume VmE, excess ultrasonic velocity uE, viscosity deviation Δη and excess Gibb’s free energy of activation for viscous flow ΔG*E have been calculated. The deviation/excess parameters were plotted against the mole fraction of quinoline over the whole composition range. The observed negative and positive values of deviaiton/excess thermo-acoustic parameters were explained on the basis of intermolecular interactions present in these mixtures.

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.

Excess molar volumes and viscosities of binary mixtures of some polyethers with propylamine at 298.15 K

2002 ◽  
Vol 80 (5) ◽  
pp. 467-475 ◽  
Author(s):  
Amalendu Pal ◽  
Rakesh Kumar Bhardwaj
Keyword(s):  
Experimental Data ◽  
Viscous Flow ◽  
Binary Mixtures ◽  
Entire Range ◽  
Excess Volume ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Molar Volumes ◽  
Binary Liquid ◽  
Volume Viscosity

Excess molar volumes (VmE) and dynamic viscosities (η) have been measured as a function of composition for binary liquid mixtures of propylamine with 2,5-dioxahexane, 2,5,8-trioxanonane, 2,5,8,11-tetraoxadodecane, 3,6,9-trioxaundecane, and 5,8,11-trioxapentadecane at 298.15 K. The excess volumes are positive over the entire range of composition for the systems propylamine + 2,5-dioxahexane, and + 3,6,9-trioxaundecane, negative for the systems propylamine + 2,5,8,11-tetraoxadodecane, and + 5,8,11-trioxapentadecane, and change sign from positive to negative for the remaining system propylamine + 2,5,8-trioxanonane. From the experimental data, deviations in the viscosity (Δln η) and excess energies of activation for viscous flow (ΔG*E) have been derived. These values are positive for all mixtures with the exception of propylamine + 2,5-dioxahexane.Key words : excess volume, viscosity, binary mixtures.

The mutual diffusion coefficient of ethanol–water mixtures: determination by a rapid, new method

1974 ◽  
Vol 336 (1606) ◽  
pp. 393-406 ◽  
Keyword(s):  
Experimental Data ◽  
Diffusion Coefficient ◽  
Laminar Flow ◽  
Diffusion Coefficients ◽  
Entire Range ◽  
Liquid Mixtures ◽  
Mutual Diffusion ◽  
Mutual Diffusion Coefficient ◽  
Mechanical Theory ◽  
Statistical Mechanical

Mutual diffusion coefficients for liquid mixtures of ethanol and water have been measured over the entire range of composition and for temperatures from 25 to 65 °C at a pressure of 1 bar (10 5 Pa). At the lowest temperature, the results establish the validity of a new experimental method based upon Taylor’s analysis of solute dispersion in laminar flow. The method offers advantages of simplicity and speed over other techniques, and allows direct measurement of diffusion coefficients at well-defined mixture compositions. The experimental data have an estimated uncertainty of ±2.5% . The results have been utilized to evaluate friction coefficients arising in the statistical mechanical theory of transport in liquid mixtures.

scholarly journals Evaluation of Ultrasonic Velocity Theories on Binary Liquid Mixtures of Propiophenone with Isomeric Xylenes at Temperatures (T = 303.15 to 318.15 K)

2020 ◽  
Vol 32 (12) ◽  
pp. 3087-3092
Author(s):  
Nanduri Gayatri Devi ◽  
N.V.N.B. Srinivasa Rao ◽  
D. Ramachandran
Keyword(s):  
Experimental Data ◽  
Binary Mixtures ◽  
Ultrasonic Velocity ◽  
Goodness Of Fit ◽  
Liquid Mixtures ◽  
Percentage Error ◽  
Chi Square ◽  
Chi Square Test ◽  
Relative Percentage Error ◽  
Molecular Interaction Parameter

Densities (ρ), ultrasonic speeds of sound (u) of binary mixtures containing propiophenone with o-xylene, m-xylene and p-xylene were measured over the entire composition range at temperatures from 303.15-318.15 K and at atmospheric pressure 0.1 MPa. Experimental data of ultrasonic velocity was used to compute the theoretical velocities by using the various theories like Nomoto’s relation (UNOM), impedance relation (UIMP), Van Dael and Vangeel’s relation (UVDV), Rao’s specific velocity relation (URAO), Jouyban-Acree’s (UJOE) and Junjie’s theory (UJUN). The results are in good agreement with the experimental data. The relative percentage error, chi square test for goodness of fit and the molecular interaction parameter (α) values for non-ideality in the binary mixtures were computed and analyzed in terms of intermolecular interactions between the molecules of the binary mixtures.

Measurements and Theoretical Analysis of Excess Molar Volumes for Binary Mixtures of Dimethyl Sulfoxide with Xylenes

2008 ◽  
Vol 59 (10) ◽  
Author(s):  
Oana Ciocirlan ◽  
Olga Iulian
Keyword(s):  
Experimental Data ◽  
Theoretical Analysis ◽  
Dimethyl Sulfoxide ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Molar Volumes ◽  
Binary Liquid ◽  
Good Agreement

Excess molar volumes, VE, have been measured for binary liquid mixtures of dimethyl sulfoxide (DMSO) with xylenes (o- xylene, m- xylene and p-xylene) at 298.15 K and atmospheric pressure. The excess volumes values were found negative over the entire composition range for all the mixtures. The VE values increase in order: p-xylene[ m-xylene[ o-xylene. The Flory and Prigogine-Flory-Patterson (PFP) thermodynamic theories of solution have been used to analyze the VE data. The calculated VE values were found to be in good agreement with the experimental data.

scholarly journals Volumetric, viscometric and optical study of molecular interactions in binary mixtures of diethyl malonate with ketones at 303.15, 308.15 and 313.15K

2012 ◽  
Vol 77 (4) ◽  
pp. 507-521 ◽  
Author(s):  
Manapragada Rathnam ◽  
Sudhir Mohite ◽  
Manapragada Kumar
Keyword(s):  
Binary Mixtures ◽  
Composition Range ◽  
Diethyl Malonate ◽  
Polynomial Equation ◽  
Molar Refraction ◽  
Optical Study ◽  
Free Energy Of Activation ◽  
Excess Parameters ◽  
Empirical Relations ◽  
Deviation In Viscosity

Density ?, viscosity ?, and refractive index nD were measured for the binary mixtures of diethyl malonate with ketones (acetophenone, cyclopentanone, cyclohexanone and 3-pentanone) at temperatures (303.15, 308.15 and 313.15) K over the entire composition range. Excess volume VE, deviation in viscosity ??, excess Gibb?s free energy of activation for viscous flow ?GE and deviation in molar refraction ?R were determined from the experimental data and computed results were fitted to the Redlich-Kister polynomial equation. The values of VE, ??, ?GE, and ?R were plotted against the mole fraction of diethyl malonate. The observed positive and negative values of excess parameters for all the studied binary mixtures were explained on the basis of intermolecular interactions present in these mixtures. Further different empirical relations were used to correlate the binary mixture viscosities and refractive indices.

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 Theoretical Evaluation of Ultrasonic Velocity in Binary Liquid Mixtures of Alcohols [S] + Benzene

2013 ◽  
Vol 7 ◽  
pp. 18-35 ◽  
Author(s):  
N. Santhi ◽  
P.L. Sabarathinam ◽  
J. Madhumitha ◽  
G. Alamelumangai ◽  
M. Emayavaramban
Keyword(s):  
Ultrasonic Velocity ◽  
Molecular Interaction ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Ultrasonic Velocities ◽  
Theoretical Evaluation ◽  
Binary Liquid ◽  
Experimental Values ◽  
Molecular Interaction Parameter

Ultrasonic velocities and densities of the binary liquid mixtures of benzene with 1-propanol, 2-propanol, 1-butanol, 2-butanol and 3-butanol at 303.15 to 318.15 K, over the entire composition range were measured. The theoretical values of ultrasonic velocity were evaluated using the Nomoto’s Relation (NR), Ideal Mixture Relation (IMR), Free Length Theory (FLT) and Collision Factor Theory (CFT). The validity of these relations and theories were tested by comparing the computed sound velocities with experimental values. Further, the molecular interaction parameter (α) was computed by using the experimental and the theoretical ultrasonic velocity values. The variation of this parameter with composition of the mixtures has been discussed in terms of molecular interaction in these mixtures.

scholarly journals Study of Molecular Interactions in Ternary Liquid Mixtures

2016 ◽  
Vol 63 ◽  
pp. 77-82
Author(s):  
Ch. Kavitha ◽  
A. Ratnakar ◽  
Kolla Narendra
Keyword(s):  
Experimental Data ◽  
Molecular Interactions ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Ternary Mixtures ◽  
Ultrasonic Velocities ◽  
Excess Parameter ◽  
Parameter Values

The ultrasonic velocities and densities of ternary mixtures of quinolone with toluene and methanol as common compound, including those of pure liquids, over the entire composition range were measured at temperatures (303.15, 308.15, 313.15 and 318.15) K and atmospheric pressure. From the experimental data, excess molar volume VmE, excess ultrasonic velocity uE and excess acoustic impedance ZE were calculated. The variation these parameters with composition and temperature of the mixtures are discussed in terms of molecular interactions in these mixtures. All the calculated excess parameter values were found to be positive and negative at each temperature studied.

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