Viscosities and Densities of Binary-Mixtures of 2,2,2-Trichloroethanol With Substituted Anilines

1988 ◽  
Vol 41 (5) ◽  
pp. 791 ◽  
Author(s):  
R Palepu ◽  
JH Macneil
Keyword(s):  
Experimental Data ◽  
Gibbs Energy ◽  
Composition Range ◽  
The Other ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Specific Interactions ◽  
Substituted Anilines ◽  
Excess Viscosity ◽  
Gibbs Energy Of Activation

Densities and viscosities of binary solvent mixtures containing 2,2,2-trichloroethanol as one component and aniline and substituted anilines as the other components have been measured over the whole composition range at 298, 303, 308, 313 and 318 K. The experimental data are fitted to a semitheoretical equation of McAllister. Excess viscosity, volume and Gibbs energy of activation of flow have been evaluated, and the departure from ideal behaviour is explained on the basis of specific interactions between the components of this mixture.

The Conductance of Sodium Perchlorate in Water-sulfolane Mixtures at 35 °C

1975 ◽  
Vol 30 (4) ◽  
pp. 533-536 ◽  
Author(s):  
Giuseppe Petrella ◽  
Maurizio Castagnolo ◽  
Antonio Sacco
Keyword(s):  
Experimental Data ◽  
Sodium Chloride ◽  
Composition Range ◽  
Sodium Perchlorate ◽  
Ion Association ◽  
Transport Numbers ◽  
Aprotic Solvents ◽  
Solvent Mixtures ◽  
Dilute Solutions ◽  
Protic Solvents

Abstract Measurements on the conductance of dilute solutions of sodium Perchlorate, at 35 °C, in water-sulfolane mixtures over the entire solvent composition range are reported. Experimental data were analyzed by the 1965 Fuoss-Onsager-Skinner equations.No detectable ion association was found for this electrolyte, unlike sodium chloride in the same solvent mixtures. The association order KA(Cl-)>KA(ClO4-) is in contrast with that observed in protic solvents [KA(ClO4-)>KA(Cl-)] and is similar to that found in aprotic solvents. This shows that in water-sulfolane mixtures, association phenomena are mainly controlled by sulfolane.The lack of transport numbers for water-sulfolane mixtures precludes unambiguous explanations for Waiden products A0η.

Thermodynamic Interactions in Binary Mixtures of 2-Methoxyethanol with Alkyl and Aryl Esters at 298.15, 303.15 and 308.15 K

1993 ◽  
Vol 58 (8) ◽  
pp. 1761-1776 ◽  
Author(s):  
Tejraj M. Aminabhavi ◽  
Shrinivas K. Raikar
Keyword(s):  
Gibbs Energy ◽  
Excess Gibbs Energy ◽  
Excess Volume ◽  
Isentropic Compressibility ◽  
Standard Errors ◽  
Refractive Indices ◽  
Excess Viscosity ◽  
Quadratic Equations ◽  
Gibbs Energy Of Activation ◽  
Excess Isentropic Compressibility

Densities, viscosities, refractive indices, and sound velocities of 2-methoxyethanol + ester mixtures have been measured at 298.15, 303.15 and 308.15 K. These data have been used to calculate excess volume, excess isentropic compressibility, excess refraction, excess viscosity and excess Gibbs energy of activation of flow. These quantities have been fitted to quadratic equations to estimate the parameters and standard errors. The results have been interpreted in term of the intermolecular interactions between the mixing components.

Thermodynamic Analysis of Viscosity Data of Ethane-1,2-diol+1,4-Dioxan Binary Mixtures

1994 ◽  
Vol 47 (6) ◽  
pp. 1117 ◽  
Author(s):  
F Corradini ◽  
A Marchetti ◽  
M Tagliazucchi ◽  
L Tassi ◽  
G Tosi
Keyword(s):  
Binary System ◽  
Viscous Flow ◽  
Composition Range ◽  
Viscosity Data ◽  
Empirical Equations ◽  
Specific Interactions ◽  
Excess Function ◽  
Binary Composition ◽  
Gibbs Energy Of Activation ◽  
Experimental Values

Kinematic viscosities (v) have been measured for pure ethane-1,2-diol, 1,4-dioxan and for nine of their mixtures covering the entire composition range and, where possible, at 19 temperatures from -10 to +80°C. The experimental values were converted into dynamic viscosities (η) and were correlated with temperature and binary composition by some empirical equations. Furthermore, the excess function ηE and the excess Gibbs energy of activation of viscous flow ΔG*E have been evaluated. Negative deviations from ideality are always observed for this binary system, this fact indicating strong specific interactions between unlike entities in solution to form stable solvent- cosolvent adducts. Activation enthalpies and entropies for viscous flow have been derived, and their dependence on binary composition is also discussed.

Thermodynamic Study on the Flotation Behavior Mechanism of Apatite with Fatty Acid as Collector

2013 ◽  
Vol 699 ◽  
pp. 846-850
Author(s):  
Zong Qi
Keyword(s):  
Experimental Data ◽  
Fatty Acid ◽  
Gibbs Energy ◽  
Thermodynamic Calculation ◽  
Thermodynamic Study ◽  
The Other ◽  
Acidic Environment ◽  
Flotation Behavior

Flotation behavior of apatite was investigated by micro-flotation with five kinds of fatty acid as collectors; the mechanism was studied by thermodynamic calculation. In the thermodynamic discussion, the Gibbs energy (∆G) of reactions, which is between the collectors and Ca2+ ions dissolved by apatite in pulp, were computed with pH as a function. A comparison of the calculated results with the flotation behavior of apatite shows that the thermodynamic results agree well with the experimental data. This finding indicates an identical characteristic between the two reactions with a variation in pH, in which one is between the collectors and Ca2+ ions dissolved by apatite in the pulp, and the other is between collectors and Ca2+ ions on apatite. Therefore, from the thermodynamic results, the mechanism for the flotation behavior of apatite could be deduced. The decrease in recovery is due to the decrease in effective constituent of collector (A–) with the falling pH. Once the concentration of A– ions is lower than a certain value, the reactions of the collectors with mineral are terminated and thus result in the depression of apatite in an acidic environment.

Empirical polarity parameters for some binary solvent mixtures

1981 ◽  
Vol 34 (5) ◽  
pp. 933 ◽  
Author(s):  
S Balakrishnan ◽  
AJ Easteal
Keyword(s):  
Solvent Polarity ◽  
The Other ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Additive Functions ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Highly Correlated ◽  
Ethanol Ethanol ◽  
Polarity Parameters

Values of the empirical solvent polarity parameters ET and Z have been determined as a function of composition for the binary solvent systems 1,2-dibromoethane + 1,2-dibromopropane, acetone + chloroform, acetone + ethanol, ethanol + chloroform and acetone + dichloromethane. For the 1,2-dibromoethane + 1,2-dibromopropane system both ET and Z are accurately linear (i.e. additive) functions of composition. For the other systems both parameters vary with composition in a strongly non-additive manner, and the deviations from additivity are interpreted in terms of intermolecular interactions. For these systems, in general ET and Z are not highly correlated, and neither parameter is highly correlated with other macroscopic properties or parameters derived from them.

Electrolytic dissociation of sodium tetraphenylborate in 2-methoxyethanol/water binary solvent mixtures

1994 ◽  
Vol 72 (2) ◽  
pp. 339-344
Author(s):  
Fulvio Corradini ◽  
Andrea Marchetti ◽  
Mara Tagliazucchi ◽  
Lorenzo Tassi ◽  
Giuseppe Tosi
Keyword(s):  
Composition Range ◽  
Dissociation Constants ◽  
Picric Acid ◽  
Ion Pair ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Experimental Conditions ◽  
Binary Solvent Mixtures ◽  
Electrolytic Dissociation ◽  
Conductance Data

Thermodynamic properties from conductance data are reported for the NaBPh4 electrolytic solutions in 2-methoxyethanol (component 1)/water (component 2) binary solvent mixtures, working at 19 temperatures ranging from −10 to +80 °C and for 6 mixtures covering the 0.1865 ≤ x1 ≤ 1 composition range. Experimental conductivity data were analysed using the Fuoss–Hsia equation, and the chosen salt was found to associate to a certain extent in these solvent mixtures. The resulting dissociation constants (K) of the ion-pair have been used to test some empirical equations K = K(T), K = K(x1), and K = K(T, x1). Furthermore, the present findings have been compared with our previously reported results from working with picric acid in the same mixtures and experimental conditions.

Densities and viscosities of binary and ternary liquid mixtures at 25 °C

1991 ◽  
Vol 69 (6) ◽  
pp. 1028-1032 ◽  
Author(s):  
Tejraj M. Aminabhavi ◽  
Shrikant S. Joshi ◽  
Ramachandra H. Balundgi ◽  
Shyam S. Shukla
Keyword(s):  
Experimental Data ◽  
Standard Deviation ◽  
Gibbs Energy ◽  
Excess Molar Volumes ◽  
Ternary Systems ◽  
Liquid Mixtures ◽  
Ternary Mixtures ◽  
Linear Regression Equation ◽  
Gibbs Energy Of Activation ◽  
Excess Quantities

Densities and viscosities of ten binary and four ternary mixtures containing bromoform, bromobenzene, chlorobenzene, toluene, mesitylene, and dimethylformamide at 25 °C have been measured over the whole range of mixture compositions. Excess molar volumes, apparent values of excess molar viscosities, and Gibbs energy of activation of flow have been calculated for these mixtures. The calculated results have been fitted to a linear regression equation to estimate the parameters and the standard deviation between the calculated and the experimental data. Key words: ternary systems, excess quantities, bromoform, density, viscosity.

Sign in / Sign up

Export Citation Format

Share Document