Excess Molar Volumes, Excess Molar Isentropic Compressibilities, Viscosity Deviations, and Activation Parameters for 1-Ethyl-3-methyl-imidazolium Trifluoro-methanesulfonate + Dimethyl Sulfoxide and/or Acetonitrile at T = 298.15 to 323.15 K and P = 0.1 MPa

2018 ◽  
Vol 63 (2) ◽  
pp. 269-289 ◽  
Author(s):  
Naushad Anwar ◽  
Riyazuddeen
Keyword(s):  
Dimethyl Sulfoxide ◽  
Excess Molar Volumes ◽  
Activation Parameters ◽  
Molar Volumes ◽  
Isentropic Compressibilities ◽  
Viscosity Deviations

Densities, Speeds of Ultrasound, Ultrasonic Absorption and Viscosities of 1-Butanol + 1,3-Butanediol System at 298.15 K

2002 ◽  
Vol 216 (11) ◽  
Author(s):  
E. Zorebski ◽  
M. Zorebski ◽  
J. Nurek
Keyword(s):  
Excess Molar Volumes ◽  
Isentropic Compressibility ◽  
Ultrasonic Absorption ◽  
Frequency Range ◽  
Molar Volumes ◽  
Isentropic Compressibilities ◽  
Viscosity Deviations ◽  
Intermolecular Association ◽  
Speed Of Ultrasound ◽  
Excess Isentropic Compressibility

Densities, speeds of ultrasound, ultrasonic absorption coefficients (in the frequency range 10–80 MHz) and kinematic viscosities have been measured for 1-butanol + 1,3-butanediol mixtures at the temperature 298.15 K. Using these results, the molar volumes, isentropic compressibility coefficients, molar isentropic compressibilities, volume viscosities, and the corresponding excess and deviation values (excess molar volumes, excess isentropic compressibility coefficients, excess molar isentropic compressibilities, two different defined deviations speed of ultrasound, and dynamic viscosity deviations) were calculated. The excess and deviation values are expressed by Redlich-Kister polynomials and discussed in terms of the variations of the structure of the system caused by the participation of the two different alcohol molecules in the dynamic intermolecular association process through hydrogen bonding. The predictive abilities of Grunberg-Nissan and McAllister equations for viscosities of mixtures are also examined.

scholarly journals Vapor pressure, density, viscosity and refractive index of dimethyl sulfoxide + 1,4-dimethylbenzene system

2008 ◽  
Vol 73 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Oana Ciocirlan ◽  
Olga Iulian
Keyword(s):  
Dimethyl Sulfoxide ◽  
Excess Molar Volumes ◽  
Excess Properties ◽  
Refractive Indices ◽  
Excess Functions ◽  
Liquid Equilibrium ◽  
Viscosity Deviations ◽  
Unifac Model ◽  
Equilibrium Data ◽  
Kister Equation

This paper reports the experimental results of isothermal vapor-liquid equilibrium data between 303.15 and 333.15 K, and densities, viscosities, refractive indices from 298.15 to 323.15 K of the dimethyl sulfoxide + 1,4-dime?thylbenzene system over the entire range of mixture composition. The obtained PTX data were correlated by the Wilson and NRTL models and estimated by the UNIFAC model. The excess Gibbs energy and activity coefficients were calculated and compared with others excess properties. Excess molar volumes, viscosity deviations and deviations in refractivity were calculated from the experimental data; all the computed quantities were fitted to the Redlich-Kister equation. The resulting excess functions were interpreted in terms of structure and interactions.

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