Ultrasonic Velocity, Viscosity, Density and Excess Properties of Ternary Mixture of N-Methylcyclohexylamine+Benzene+1-Propanol

2009 ◽  
Vol 2 (2) ◽  
pp. 169-176 ◽  
Author(s):  
P. Vasanthara ◽  
V. Pandiyan ◽  
A.N. Kannappan
2021 ◽  
Vol 17 (2) ◽  
pp. 9-15
Author(s):  
SONU DWIVEDI ◽  

Ultrasonic velocity (U), density (ρ) for the ternary mixture of (Toluene + Chlorobenzene + Cyclohexane) in the various range of composition has been carried out at 298.15K. The observed data have been utilized to calculate various acoustical parameters like Isentropic compressibility (KS), Intermolecular free length (Lf) and acoustic impedance (Z). The various excess properties like excess ultrasonic velocity(UE ), excess acoustic impedance (ZE ), excess Isentropic compressibility (KS E ) and excess Inter molecular free length (Lf E ) have been calculated and using standard relations to the Redlich-Kister equation. The trend of acoustical and physicochemical parameters confirm the dynamics of molecules at temperature and the magnitude of intermolecular interactions among the constituents of the mixture always reflects the nature of substance. The variations in sign and values of these parameters are help us to know the interaction between component molecules and structural arrangement of the liquid mixture.


1991 ◽  
Vol 69 (6) ◽  
pp. 1006-1010 ◽  
Author(s):  
Inés L. Acevedo ◽  
Graciela C. Pedrosa ◽  
Miguel Katz

Densities and viscosities were determined for the n-butylamine + 1,4-dioxane + carbon tetrachloride system at 298.15 K. Molar excess volumes and excess viscosities were calculated from the experimental results. Analytical expressions can be used to predict these excess properties from binary data, the empirical correlation of Cibulka being the best for this system. Key words: density; mixture of n-butylamine + 1,4-dioxane + carbon tetrachloride; viscosity, mixture of n-butylamine + 1,4-dioxane + carbon tetrachloride; excess properties of ternary mixture.


Heliyon ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. e02203 ◽  
Author(s):  
V. Vanathi ◽  
S. Mullainathan ◽  
S. Nithiyanatham ◽  
V. Ramasamy ◽  
L. Palaniappan

2020 ◽  
Vol 10 (5) ◽  
pp. 6498-6512

Water is designated as “Universal solvent” due to its physical and chemical attributes. Water becomes attracted to different types of molecules due to the polar arrangement of oxygen and hydrogen atoms having partial negative and positive charges. The density (ρ), ultrasonic velocity (U), viscosity (η) and refractive index (nD) of the aqueous solutions of 1, 2-ethanediol / 1, 2, 3-propanetriol have been determined at three different temperatures. Derived properties such molar volume (V), isentropic compressibility (ᵝs), acoustic impedance (Z) and free length (Lf) have been calculated using density, ultrasonic velocity and refractive index values at the measured temperatures. To evaluate various, inter and intra-molecular associations present in the systems, the excess properties (VE, ᵝsE, ZE, Lf E, ηE and ∆nD) are estimated. The excess values obtained experimentally have been fitted to the Redlich -Kister polynomial equation. Multiple linear regression and mixing rules have been adopted to calculate the viscosity and refractive index for the aqueous solutions at 298.15, 308.15 and 318.15K.


The Ultrasonic velocity(U), density(ρ), and viscosity(η) have been measured experimentally for the ternary liquid mixtures of 3(meta) methoxy phenol(MMP), 1 propanol and n hexane at various temperatures viz., 303 K, 308 K and 313 K at constant frequency of 2 MHz. for different concentrations ranges from 0.001M to 0.01M. The thermodynamic and acoustical parameters such as adiabatic compressibility(β), Rao constant(R), absorption coefficient (α/f2 ), internal pressure(πi), cohesive energy(CE), free volume(Vf), free length(Lf), acoustic impedence(z), available volume(Va), viscous relaxation time and Lenard Jones potential were calculated from the experimental data. The various excess properties including excess Ultrasonic velocity, excess acoustic impedence, excess free length, excess adiabatic compressibility, excess free volume and excess internal pressure were also computed. The variation of these excess parameters with respect to concentration and temperatures have been discussed in the light of molecular interaction. The molecular interactions were predicted based on the results obtained for ultrasonic velocities of different concentrations of the ternary mixtures at different temperatures.


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