scholarly journals Acoustic and Volumetric Properties of Mixture of (N,N-Dimethylacetamide + Ethyl Acrylate) with 1-Butanol or iso-Butanol or t-Butanol at 308.15 K

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
M. Kondaiah ◽  
K. Sreekanth ◽  
D. Sravana Kumar ◽  
D. Krishna Rao
Keyword(s):  
Molecular Interactions ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Ethyl Acrylate ◽  
Entire Composition Range ◽  
Excess Properties ◽  
Strong Interactions ◽  
Ultrasonic Speed ◽  
Velocity Data ◽  
Deviation In Isentropic Compressibility

Densities, ρ, and ultrasonic speeds, u of mixtures of 1-butanol or iso-butanol or t-butanol with equimolar mixture of (N,N-dimethylacetamide + Ethyl acrylate) over the entire composition range have been measured at T=308.15 K. Using the experimental results, deviation in ultrasonic speed, Δu, deviation in isentropic compressibility, Δks, excess molar volume, VmE, excess intermolecular free length, LfE, and excess acoustic impedance, ZE, have been calculated. The variation of these properties with composition of the mixtures has been discussed in terms of molecular interactions in these mixtures. The deviation/excess properties have been fitted to Redlich-Kister type polynomial and the corresponding standard deviations have been calculated. Negative values of VmE, Δks, and LfE and positive values of Δu, and ZE are observed over the entire composition range. The observed negative and positive values of deviation/excess properties are attributed to the strong interactions between the unlike molecules of the mixtures. Further theoretical values of sound velocity in the mixtures have been evaluated using various theories and compared with experimental sound velocities to verify the applicability of such theories to the systems studied. Theoretical ultrasonic velocity data has been used to study molecular interactions in the systems investigated.

Excess properties for acetophenone + butanols at 298.15 K

2001 ◽  
Vol 79 (1) ◽  
pp. 50-53
Author(s):  
Roque Riggio ◽  
Juan F Ramos ◽  
Hector E Martinez
Keyword(s):  
Free Energy ◽  
Molecular Interactions ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Properties ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Free Energy Of Activation ◽  
Volume Viscosity

Densities, viscosities, and refractive indexes of binary systems acetophenone + n-butanol, + sec-butanol, and + 2-methyl-1-propanol have been measured at 298.15 K and atmospheric pressure, over the whole composition range. The excess values of molar volume, viscosity, Gibbs free energy of activation of viscous flow, and internal pressure were calculated from experimental measurements. Based on the variations of the excess functions with composition, conclusions about the molecular interactions in these kinds of mixtures were obtained.Key words: excess properties, binary mixtures, butanols, acetophenone.

Excess properties for cyclohexanone + butanols at 298.15 K

1995 ◽  
Vol 73 (8) ◽  
pp. 1274-1277 ◽  
Author(s):  
Roque Riggio ◽  
Hector E. Martinez ◽  
Norma Z. De Salas ◽  
Miriam D. De Toigo ◽  
Juan F. Ramos
Keyword(s):  
Free Energy ◽  
Molecular Interactions ◽  
Atmospheric Pressure ◽  
Binary Systems ◽  
Composition Range ◽  
Excess Properties ◽  
Excess Functions ◽  
Experimental Measurements ◽  
Free Energy Of Activation ◽  
Volume Viscosity

Densities, viscosities, and refractive indexes of the binary systems cyclohexanone + n-butanol, + sec-butanol, and + 2-methyl-1-propanol have been measured at 298.15 K and atmospheric pressure, over the whole composition range. The excess values of molar volume, viscosity, Gibbs free energy of activation of viscous flow, and internal pressure were calculated from experimental measurements. Based on the variations of the excess functions with composition, conclusions about the molecular interactions in these kinds of mixtures were obtained. Keywords: excess properties, binary mixtures, butanols, cyclohexanone.

Excess volumes of binary mixtures of cyclohexanone with some monosubstituted benzenes at 298.15 K

1983 ◽  
Vol 61 (9) ◽  
pp. 2147-2150 ◽  
Author(s):  
B. Chawla ◽  
S. K. Mehta ◽  
R. V. Jasra ◽  
S. K. Suri
Keyword(s):  
Binary Mixtures ◽  
Molecular Interactions ◽  
Composition Range ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Density Data ◽  
Molar Excess ◽  
Monosubstituted Benzenes ◽  
Molar Excess Volumes ◽  
Experimental Density

Molar excess volumes for the binary mixtures of cyclohexanone with benzene and some monosubstituted benzenes, namely, toluene, ethylbenzene, isopropylbenzene, tertiary butylbenzene, chlorobenzene, bromobenzene, iodobenzene, N,N-dimethylaniline, nitrobenzene, benzaldehyde, and benzonitrile have been calculated from the precise and accurate experimental density data at 298.15 K over the entire composition range. The results have been discussed in terms of the strength of molecular interactions in the binary mixtures.

scholarly journals Density, Viscosity and Ultrasonic Speed Based Acoustical Studies of Structural Properties of 1,1’-Bis(4-Amino Phenyl) Cyclohexane Symmetric Double Schiff Bases in THF Solutions at 303.15, 308.15 and 313.15K

2015 ◽  
Vol 53 ◽  
pp. 19-30
Author(s):  
Bhavesh J. Gangani ◽  
Parsotam H. Parsania
Keyword(s):  
Schiff Bases ◽  
Molecular Interactions ◽  
Path Length ◽  
Free Path Length ◽  
Isentropic Compressibility ◽  
Linear Increase ◽  
Ultrasonic Speed ◽  
Solvent Concentration ◽  
Acoustical Parameters ◽  
Different Temperatures

The density (ρ), viscosity (η) and ultrasonic speed (U) (2MHz) of THF solutions of symmetric double Schiff bases (SDSB-1,SDSB-2 and SDSB-3) were determined at 303.15, 308.15 and 313.15 K. Various acoustical parameters such as specific acoustical impedance (Z), isentropic compressibility (ks), Rao’s molar sound function (Rm), Van der Waals constant (b), internal pressure (π), free volume (Vf), intermolecular free path length (Lf), viscous relaxation time (τ) and classical absorption coefficient (α/f2)Cl), were determined using ρ, η and U data. The results are interpreted in terms of molecular interactions occurring in the solutions at different temperatures and concentrations. Linear increase of ρ, η U, Z, Rm, b, (α/f2)Cl and τ with increasing C, linear decrease of КS, Lf and π with increasing T, Vf increased linearly with C and T except SDSB-3 supported existence of strong molecular interactions in the solutions and confirming solvophilic nature of the Schiff bases. The structure, nature and size of the solutes and solvent, concentration and temperature affected molecular interactions.

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

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.

Alloyed (ZnSe)x(CuInSe2)1–xand CuInSexS2–xNanocrystals with a Monophase Zinc Blende Structure over the Entire Composition Range

2011 ◽  
Vol 50 (23) ◽  
pp. 11958-11964 ◽  
Author(s):  
Shenjie Li ◽  
Zechen Zhao ◽  
Qinghui Liu ◽  
Lijian Huang ◽  
Gang Wang ◽  
...  
Keyword(s):  
Composition Range ◽  
Entire Composition Range ◽  
Zinc Blende ◽  
Zinc Blende Structure

scholarly journals Thermo Physical Properties for Binary Mixture of Dimethylsulfoxide and Isopropylbenzene at Various Temperatures

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Maninder Kumar ◽  
V. K. Rattan
Keyword(s):  
Refractive Index ◽  
Binary Mixture ◽  
Speed Of Sound ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Experimental Measurements ◽  
Kister Equation ◽  
Thermo Physical Properties

Density, refractive index, speed of sound, and viscosity have been measured of binary mixture dimethylsulfoxide (DMSO) + isopropylbenzene (CUMENE) over the whole composition range at 298.15, 303.15, 308.15, and 313.15 K and atmospheric pressure. From these experimental measurements the excess molar volume, deviations in viscosity, molar refractivity, speed of sound, and isentropic compressibility have been calculated. These deviations have been correlated by a polynomial Redlich-Kister equation to derive the coefficients and standard error. The viscosities have furthermore been correlated with two or three parameter models, that is, herric correlation and McAllister model, respectively.

The local structure in the BmimPF6/acetonitrile mixture: the charge distribution effect

2018 ◽  
Vol 20 (34) ◽  
pp. 21890-21902 ◽  
Author(s):  
Volodymyr Koverga ◽  
Oleg N. Kalugin ◽  
François-Alexandre Miannay ◽  
Yevheniia Smortsova ◽  
Kateryna Goloviznina ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Binary Mixture ◽  
Charge Distribution ◽  
Local Structure ◽  
Composition Range ◽  
Entire Composition Range ◽  
Distribution Effect

The effect of the charge distribution on the local structure in the binary mixture of 1-butyl-3-methylimidazolium hexafluorophosphate (BmimPF6) ionic liquid and acetonitrile is investigated over the entire composition range.

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