Ultrasonic Velocity and Isentropic Compressibility Studies of Monoalkylammonium Salts in Binary Mixtures of Acetonitrile and N,N-Dimethylacetamide at Variable Temperature and Atmospheric Pressure

In the present study, the excess molar volume (VE) and the deviations in intermolecular free length (ΔLf), isentropic compressibility (Δβs), acoustic impedance (ΔZ), and ultrasonic velocity (ΔU) were calculated using the experimentally measured values of density (ρ) and ultrasonic velocity (U) of binary mixtures of an acidic organophosphoric extractant (DEHPA) with two substituted aromatic hydrocarbons, i.e., p-xylene and toluene at 303.15K and atmospheric pressure, 0.1MPa over the entire composition range of DEHPA. The results of both binary mixtures have been presented graphically and compared in terms of molecular interaction between unlike molecules of the mixtures, which outcome may be applied in the solvent extraction process.

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Speed of Sound and Excess Isentropic Compressibility of 1,3-Dioxolane or 1,4-Dioxane + Butan-1-ol or + Butan-2-ol Binary Mixtures at 308.15 K and Atmospheric Pressure

Industrial & Engineering Chemistry Research ◽

10.1021/ie101286f ◽

2010 ◽

Vol 49 (18) ◽

pp. 8365-8368 ◽

Cited By ~ 1

Author(s):

Satish Kumar ◽

V. K. Sharma ◽

Il Moon

Keyword(s):

Binary Mixtures ◽

Speed Of Sound ◽

Atmospheric Pressure ◽

Isentropic Compressibility ◽

Excess Isentropic Compressibility

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Thermophysical Properties of Binary Mixtures of Dimethylsulfoxide with 1-Phenylethanone and 1,4-Dimethylbenzene at Various Temperatures

Journal of Thermodynamics ◽

10.1155/2014/607052 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9

Author(s):

Harmandeep Singh Gill ◽

V. K. Rattan

Keyword(s):

Binary Mixtures ◽

Speed Of Sound ◽

Atmospheric Pressure ◽

Composition Range ◽

Excess Molar Volumes ◽

Isentropic Compressibility ◽

Molar Refraction ◽

Viscosity Deviations ◽

Research Article ◽

Kister Equation

This research article reports the experimental results of the density, viscosity, refractive index, and speed of sound analysis of binary mixtures of dimethylsulfoxide (DMSO) + 1-phenylethanone (acetophenone) and + 1,4-dimethylbenzene (para-xylene) over the whole composition range at 313.15, 318.15, 323.15, and 328.15 K and at atmospheric pressure. The excess molar volumes (VE), viscosity deviations (Δη), excess Gibbs energy of activation (GE), deviations in isentropic compressibility (KSE), deviations in speed of sound (uE), and deviations in the molar refraction (ΔR) were calculated from the experimental data. The computed quantities were fitted to the Redlich-Kister equation to derive the coefficients and estimate the standard error values. The viscosities have also been correlated with two, and three-parameter models, that is, Heric correlation, McAllister model, and Grunberg-Nissan correlation, respectively.

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Solvation Behaviour of Some Copper(I) Nitrate Complexes in Dimethylsulfoxide and Nitromethane at 298 K

Asian Journal of Chemistry ◽

10.14233/ajchem.2021.23231 ◽

2021 ◽

Vol 33 (8) ◽

pp. 1776-1782

Author(s):

Vivek Pathania ◽

Manpreet Kaur ◽

B.K. Vermani ◽

Shrutila Sharma ◽

Navya Grover

Keyword(s):

Binary Mixtures ◽

Ultrasonic Velocity ◽

Calculated Result ◽

Isentropic Compressibility ◽

Ultrasonic Velocities ◽

Density Data ◽

Nitrate Complexes ◽

Structure Breaking

The ultrasonic velocities of solutions of Bu4NBPh4, Bu4NClO4, [Cu(AN)4]NO3, [Cu(BN)4]NO3, [Cu(Phen)2]NO3, [Cu(DMPhen)2]NO3, [Cu(Bipy)2]NO3 and [Cu(TU)4]NO3 (where AN = acetonitrile, BN = benzonitrile, Phen = 1,10-phenanthroline, DMPhen = 2,9-dimethyl-1,10-phenanthroline, Bipy = 2,2′-bipyridyl and TU = thiourea) were measured in the concentration range 0.03-0.27 M in dimethylsulfoxide (DMSO), nitromethane (NM) and binary mixtures of DMSO + NM containing 0, 20, 40, 60, 80 and 100 mol% NM at 298 K in the present studies. Using ultrasonic velocity and density data, isentropic compressibility (κs) and apparent molal isentropic compressibility (κs,φ) for electrolytes in DMSO + NM mixture have been calculated. Result shows that copper(I) electrolytes show less solvation in NM rich regions indicating structure breaking tendency of nitromethane. Extent of solvation in Cu(I) ions decreases in the order: [Cu(AN)4]+ > [Cu(BN)4]+ > [Cu(TU)4]+ > [Cu(DMPhen)2]+ > [Cu(Phen)2]+ > [Cu(Bipy)2]+.

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Thermo Acoustic Parameters of Tetrabutylammonium Borate and Perchlorate in Non-Aqueous Solvents

Oriental Journal Of Chemistry ◽

10.13005/ojc/370330 ◽

2021 ◽

Vol 37 (3) ◽

pp. 722-734

Author(s):

Manpreet Kaur

Keyword(s):

Ultrasonic Velocity ◽

Molecular Interactions ◽

Variable Temperature ◽

Isentropic Compressibility ◽

Solvent Mixture ◽

Acoustic Properties ◽

Acoustic Parameters ◽

Rao’S Constant ◽

Different Temperatures ◽

Gibb’S Free Energy

Interactions of electrolytes in a binary mixture can be determined by various techniques. Ultrasonic velocity measurements prove to be one of the important tools for measuring various acoustic properties at variable temperature. Thermo acoustic parameters like Isentropic compressibility (κs),Acoustic impedance (Z), Free volume (Vf), Absorption coefficient (Abscoeff), Intermolecular free length (Lf), Gibb’s free energy (ΔG), Relaxation time (τ), Rao’s constant (Rm), Internal pressure (πi), Wada’s constant (w), and Entropy (H) for Tetrabutylammonium tetraphenylborate (Bu4NBPh4) and Tetrabuty lammonium perchlorate (Bu4NClO4) was calculated using experimental ultrasonic velocities, viscosities and densities at three different temperatures (298K, 308 K and 318K) and 1 atmospheric pressure in non-aqueous solvents like Dimethylsulfoxide (DMSO), Pyridine (Py) and their binary mixtures at 0, 20, 40, 60, 80 and 100 mol% of Py at variable temperatures ranging from 298K to 318K. Both Bu4NBPh4, Bu4NClO4, showed an increase in the ultrasonic velocity values at all the temperatures. This shows that molecular interactions are taking place in both the electrolytes. These increases in the molecular interactions with increase in the concentration of electrolytes in the solvent mixture were discussed in terms of solvent structural effects. And results showed the greater molecular interaction in DMSO rich regions.

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