Ion-Solvent Interactions Investigated by Isentropic Compressibility Measurements of Tetraalkylammonium, Copper(I) and Sodium Salts in Binary Mixtures of Acetonitrile and n-Butyronitrile at 298.15 K

Ultrasonic velocities and densities of binary mixtures of acetonitrile (AN) and n-butyronitrile (n-BTN) with Bu4NBPh4, Bu4 NClO4, Bu4 NI, Bu4NBr, Pr4NBr, Et4NI, Et4NBPh4, NaBPh4, NaClO4 and CuClO4 have been measured in the concentration range 0.0045 - 0.2 mol kg−1 over the entire composition range at 298.15 K. Isentropic compressibilities (Ks) and apparent molal isentropic compressibilities (Ks,ø ) have been calculated. Limiting apparent molal isentropic compressibilities (Kos,ø ) have been evaluated and split into the contribution of individual ions, i. e. into (Kos,ø )± values. (Kos,ø )± for Cu+, Na+ and Br− in all cases is negative and large, for Bu4N+ and Ph4B− positive and large, and for I− and ClO4− negative only in AN, and becomes positive in binary mixtures of AN and n-BTN for all compositions. The negative (Kos,ø )± values for Cu+, Na+ and Br− indicate strong ionsolvent interactions involving electrostatic ion-dipole interactions. The large and positive (Kos,ø )± values for Bu4N+ and Ph4B− show some special type of ion-solvent interactions (hydrophobic or dispersion interactions) with AN and n-BTN. The small negative value changing to a small positive value for I− and ClO4 − indicates the change of a weak electrostatic ion-solvent interaction to another weak special interaction. A comparison of (Kos,ø )± for Cu+ in some solvent systems shows that the ion-solvent interaction behaviour of Cu+ in AN+ n-BTN is similar to that in AN+ NM, AN+ TEP, BN+ TEP and PY + TEP mixtures but differs from that observed in AN+DMF and AN+DMSO mixtures.

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A Comparison Study on Molecular Interaction of an Acidic Organophosphoric Extractant with Substituted Aromatic Hydrocarbon (p-xylene/toluene) at 303.15K

Biointerface Research in Applied Chemistry ◽

10.33263/briac113.1005210058 ◽

2020 ◽

Vol 11 (3) ◽

pp. 10052-10058

Keyword(s):

Binary Mixtures ◽

Ultrasonic Velocity ◽

Aromatic Hydrocarbons ◽

Molecular Interaction ◽

Atmospheric Pressure ◽

Composition Range ◽

Isentropic Compressibility ◽

Extraction Process ◽

Comparison Study ◽

Intermolecular Free Length

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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Excess Volumes and Isentropic Compressibilities of Binary Mixtures of Butylamine and Cyclic Ketones

Australian Journal of Chemistry ◽

10.1071/ch9791649 ◽

1979 ◽

Vol 32 (8) ◽

pp. 1649 ◽

Cited By ~ 10

Author(s):

M Sreenivasulu ◽

PR Naidu

Keyword(s):

Hydrogen Bonding ◽

Binary Mixtures ◽

Isentropic Compressibility ◽

Excess Volumes ◽

Cyclic Ketones ◽

Isentropic Compressibilities ◽

Deviation In Isentropic Compressibility

Excess volumes and isentropic compressibilities for the binary mixtures of cyclohexanone, cylopentanone and 2-methylcyclohexanone with butylamine were determined at 303�15 and 313�15 K. Excess volumes of the three mixtures are negative over the whole range of compositions at both the temperatures. Deviations in isentropic compressibility are also negative in all the three mixtures. The results are ascribed to strong hydrogen bonding between unlike molecules. The results also suggest that cyclization decreases both √E and the deviation in 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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Excess molar volumes, speeds of sound, and isentropic compressibilities of binary mixtures of furfural with some aliphatic alcohols

Canadian Journal of Chemistry ◽

10.1139/v89-097 ◽

1989 ◽

Vol 67 (4) ◽

pp. 648-650 ◽

Cited By ~ 5

Author(s):

Homendra Naorem ◽

Nand Kishore ◽

S. K. Suri

Keyword(s):

Binary Mixtures ◽

Composition Range ◽

Excess Molar Volumes ◽

Aliphatic Alcohols ◽

Entire Composition Range ◽

Specific Interactions ◽

Molar Volumes ◽

Isentropic Compressibilities ◽

Sound Speeds ◽

Speeds Of Sound

Excess molar volumes and isentropic compressibilities for the binary mixtures of furfural with methanol, ethanol, 1 -propanol, 2-propanol, 1-butanol, and 2-butanol have been computed from the experimentally measured densities and sound speeds at 308.15 K over the entire composition range. All the systems studied exhibit contraction on mixing. The results have been discussed in terms of the specific interactions between the component molecules of the binary mixtures. Keywords: excess molar volumes, isentropic compressibilities, furfural, aliphatic alcohols, unlike reactions.

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Ultrasonic Velocities, Densities and Viscosities of (Prop-2-en-1-ol+Ethylbenzene or Isopropylbenzene) at 298.15 And 308.15 K

Australian Journal of Chemistry ◽

10.1071/ch9891077 ◽

1989 ◽

Vol 42 (7) ◽

pp. 1077 ◽

Cited By ~ 7

Author(s):

VK Rattan ◽

BPS Sethi ◽

KSN Raju

Keyword(s):

Composition Range ◽

Isentropic Compressibility ◽

Excess Functions ◽

Specific Interactions ◽

Ultrasonic Velocities ◽

Molar Free Energy ◽

Excess Value ◽

Higher Temperature ◽

Experimental Values ◽

Sound Density

Isentropic compressibility, its excess value, excess molar volume, excess viscosity, and excess molar free energy for the activation of flow have been calculated from the experimental values of the speed of sound, density and viscosity at 298.15 and 308.15 K for mixtures of prop-2-en-1-ol with ethylbenzene or isopropylbenzene. The parameter d, of the Grunberg and Nissan expression, has also been calculated. The variation of the excess functions with composition indicates the absence of any specific interactions. In both the systems at 298.15 K, for alcohol mole fraction less than 0.66, the dissociation of the hydrogen-bonded alcohol agglomerates predominates over the association between unlike molecules. At the higher temperature the dissociation is predominant over the whole composition range.

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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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Ion-Solvent Interactions Investigated by Isentropic Compressibility Measurements of Lithium and Sodium Salts in Binary Mixtures of Acetonitrile and Nitromethane at 298.15 K

Asian Journal of Chemistry ◽

10.14233/ajchem.2021.23279 ◽

2021 ◽

Vol 33 (6) ◽

pp. 1447-1451

Author(s):

Hardeep Anand ◽

Narender Singh ◽

Suresh Kumar

Keyword(s):

Binary Mixtures ◽

Sodium Perchlorate ◽

Lithium Perchlorate ◽

Isentropic Compressibility ◽

Binary Solvent ◽

Solvent Mixtures ◽

Large Magnitude ◽

Solvent Interactions ◽

Na Ions ◽

Solvent Molecules

Ultrasonic velocities (u) and densities (ρ) of lithium perchlorate (LiClO4), sodium perchlorate (NaClO4), sodium tetraphenylborate (NaBPh4), tetrabutylammonium tetraphenylborate (Bu4NBPh4) and tetrabutylammonium perchlorate (Bu4NClO4) were measured in the concentration range 0.001-0.25 mol kg-1 in acetonitrile (AN) and nitromethane (NM) binary mixtures consisting of 0, 20, 40, 60, 80 and 100 mol%NM in AN at 298.15 K. The isentropic compressibility (Ks) and apparent molal isentropic compressibility (Ks,f) values of the above salts in all solvent mixtures have been evaluated from experimental data. Limiting apparent molal isentropic compressibilities (Ko s,φ) for various salts were evaluated and split into the ionic contributions (Ko s,φ)±. The variation of (Ko s,φ)± with solvent compositions shows that Li+ and Na+ ions have very large negative (Ko s,φ)± values indicating strong solvation of both Li+ and Na+ ions in AN + NM mixtures over whole binary solvent composition range. Stronger solvation was further observed in the intermediate compositions of AN + NM mixtures. Li+ ions, however, showed much higher solvation as compared to Na+ ions at all compositions. The ClO4 – ions showed feeble solvation in AN + NM mixtures through some interaction with AN binary mixtures with higher mol% of AN. The positive values of (Ko s,φ)± with large magnitude for Bu4N+ and Ph4B– ions indicate solvophobic type of interaction with the solvent molecules, which is stronger in the intermediate compositions of AN + NM mixtures.

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Excess Volumes and Isentropic Compressibilities of Binary Mixtures of an Alcohol and Isobutyl Methyl Ketone

Australian Journal of Chemistry ◽

10.1071/ch9790687 ◽

1979 ◽

Vol 32 (3) ◽

pp. 687 ◽

Cited By ~ 9

Author(s):

KS Reddy ◽

PR Naidu

Keyword(s):

Binary Mixtures ◽

Methyl Ketone ◽

Isentropic Compressibility ◽

Excess Volumes ◽

Isentropic Compressibilities ◽

Deviation In Isentropic Compressibility

Excess volumes and isentropic compressibilities for the binary mixtures of propan-1-ol, butan-1-ol, pentan-1-ol, hexan-1-ol with isobutyl methyl ketone were determined at 303.15 and 313.15 K. Excess volumes of the four mixtures are negative over the whole range of compositions at both the temperatures. Deviations in isentropic compressibility are also negative in all cases, except for propan-1-ol + isobutyl methyl ketone. In this system, the deviation in isentropic compressibility shows an inversion in sign at 303.15 K.

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Acoustical Studies of Ternary Liquid Mixtures of 2-Aminothiazole in DMF-Water at Different Temperatures

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.59.188 ◽

2015 ◽

Vol 59 ◽

pp. 188-198 ◽

Cited By ~ 2

Author(s):

P.B. Morey ◽

A.B. Naik

Keyword(s):

Composition Range ◽

Ultrasonic Method ◽

Adiabatic Compressibility ◽

Liquid Mixtures ◽

Relative Strength ◽

Ultrasonic Velocities ◽

Solvent Interaction ◽

Volume Viscosity ◽

Different Temperatures ◽

Apparent Molar Compressibility

The nature and the relative strength of the intermolecular interaction between the components of the liquid mixtures have been successfully investigated by ultrasonic method. In present study, the densities (ρ), ultrasonic velocities (u), viscosity (ɳ) and refractive index (nD) in a ternary liquid mixture of 2-aminothiazole with N,N-dimethylformamide (DMF) in water have been measured at 303.15, 308.15, 313.15,318.15 and 323.15 K respectively, over the entire composition range by using densitometer, ultrasonic interferometer, viscometer and refractmeter respectively. The measured data have been used to compute the various thermo-acoustic parameters using the standard relations namely, adiabatic compressibility (βs), intermolecular free length (Lf), specific acoustic Impedance (Z),Wada constant (W), molar sound velocity (R), relative association (RA), apparent molar compressibility (),apparent molar volume () viscosity relaxation time (Г),absorption coefficient, internal pressure (ᴨ),free volume (Vf),Gibb҆ s free energy (∆G) and specific refraction (r), etc. The results have been analyzed on the basis of variation in thermodynamic parameters. These parameters are useful for explaining the molecular association and interaction between the components of ternary liquid mixtures. The variation in densities and ultrasonic velocities with concentrations in the system show similar trends for evaluated parameters of the constituents in ternary mixture at different temperatures. The results have been interpreted in terms of solute-solvent and solvent-solvent interaction.

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Conductance and Viscometric Studies of Some Tetraalkylammonium and Sodium Salts in Acetonitrile-Dimethyl Sulfoxide Mixtures at 35 °C

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19922078 ◽

1992 ◽

Vol 57 (10) ◽

pp. 2078-2088 ◽

Cited By ~ 4

Author(s):

Mohinder S. Chauhan ◽

Kishore C. Sharma ◽

Sanjay Gupta ◽

Suvarcha Chauhan ◽

Vijay K. Syal

Keyword(s):

Dimethyl Sulfoxide ◽

Binary Mixtures ◽

Molar Conductivity ◽

Viscosity Data ◽

Conductivity Data ◽

Equation Resolution ◽

Solvent Interaction ◽

Sodium Salts ◽

Ionic Components

Molar conductances and viscosities of Bu4NBPh4, NaBPh4 and R4NBr (R ethyl, propyl and butyl) at 35 °C in acetonitrile (AN), dimethylsulfoxide (DMSO) and their binary mixtures have been reported. The conductivity data has been analysed by the Shedlovsky conductance equation and viscosity data by the Jones-Dole equation. Resolution of limiting molar conductivity (Λ0) and viscosity B coefficient of electrolytes into their ionic components have been achieved by the reference salt method. Viscosity A coefficients have been compared with theoretical Aη coefficients. Derived conductance and viscosity parameters have been discussed in terms of the ion-solvent interaction.

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