Molar excess enthalpy for the binary systems 1,3-dioxolane + 1,2-trans-dichloroethylene, tetrachloroethylene or 1,1,2,2-tetrachloroethane

1991 ◽  
Vol 36 (1) ◽  
pp. 32-34 ◽  
Author(s):  
Fabio Comelli ◽  
Romolo Francesconi
Keyword(s):  
Binary Systems ◽  
Excess Enthalpy ◽  
Molar Excess ◽  
Molar Excess Enthalpy

scholarly journals Thermodynamic evidence for complex formation between carbon tetrachloride and triethylamine

1973 ◽  
Vol 26 (5) ◽  
pp. 1143 ◽  
Author(s):  
DV Fenby
Keyword(s):  
Carbon Tetrachloride ◽  
Complex Formation ◽  
Electron Acceptor ◽  
Excess Enthalpy ◽  
Molar Excess ◽  
Molar Excess Enthalpy

The molar excess enthalpy of the system carbon tetrachloride+ triethylamine has been measured at 298.15 K. The results are consistent with complex formation between the unlike molecules and provide further evidence for the electron acceptor ability of carbon tetrachloride.

AN ADIABATIC SOLUTION CALORIMETER USED FOR MEASURING THE MOLAR EXCESS ENTHALPY OF THE SYSTEM CARBON TETRACHLORIDE – BENZENE AT 25 °C

1965 ◽  
Vol 43 (7) ◽  
pp. 1912-1917 ◽  
Author(s):  
J. E. Bennett ◽  
G. C. Benson
Keyword(s):  
Carbon Tetrachloride ◽  
Excess Enthalpy ◽  
Adiabatic Calorimeter ◽  
Molar Excess ◽  
Heats Of Mixing ◽  
Maximum Value ◽  
Molar Excess Enthalpy ◽  
Continuous Record ◽  
Flexible Diaphragm ◽  
Solution Calorimeter

A new adiabatic calorimeter for measuring heats of mixing is described. The design of the mixing cell avoids the presence of a vapor space, and accommodates changes in volume by means of a flexible diaphragm. The apparatus is equipped with automatic adiabatic control and produces a continuous record of the temperature of the mixing cell. An extensive series of measurements was carried out for the system carbon tetrachloride – benzene at 25 °C. The maximum value of the molar excess enthalpy, 113.4 ± 0.5 J mole−1, occurred at a mole fraction of carbon tetrachloride equal to 0.4907. For most of the concentration range, the results are from 1 to 2 J mole−1 lower than data reported recently by other investigators.

Vapour-Liquid Equilibria and Excess Thermodynamic Properties in Binary Systems of Cyclopentanone + Chloroalkanes in View of the Disquac and Unifac Group Contribution Models Extention

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Alexandru Birhala ◽  
Dana Dragoescu ◽  
Mariana Teodorescu
Keyword(s):  
Binary Systems ◽  
Excess Enthalpy ◽  
Group Contribution ◽  
Excess Properties ◽  
Structural Effects ◽  
Liquid Equilibrium ◽  
Excess Thermodynamic Properties ◽  
Different Types ◽  
Thermodynamic Excess Properties ◽  
Thermodynamic Excess

The data available in the literature and our recent data on vapour�liquid equilibrium (VLE), excess Gibbs energy, GE, and excess enthalpy, HE, for the homologous series of cyclopentanone + chloroalkane mixtures are examined in terms of the predictive group contribution models DISQUAC and UNIFAC. In our treatment, we present also how the structural effects and different types of molecular interactions are reflected by the thermodynamic excess properties of the mentioned series mixtures.

scholarly journals Verdampfungsgleichgewicht und thermodynamisehe Funktionen des flüssigen Systems Wasser + Essigsäure / Vapour-Liquid. Equilibrium and Thermodynamic Functions of the Liquid System Water + Acetic Acid

1973 ◽  
Vol 28 (10) ◽  
pp. 1740-1742 ◽  
Author(s):  
R. Haase ◽  
M. Pehlke ◽  
K.-H. Dücker
Keyword(s):  
Acetic Acid ◽  
Composition Dependence ◽  
Excess Enthalpy ◽  
Excess Entropy ◽  
Liquid System ◽  
Gibbs Function ◽  
Liquid Equilibrium ◽  
Molar Excess ◽  
C 30 ◽  
System Water

Vapour pressures and vapour compositions of the liquid system water + acetic acid have been measured at 25 °C, 30 °C, 35 °C, 40 °C, and 45 °C in the whole range of compositions. The dimerization of acetic acid in the vapour being taken into account, the molar excess Gibbs function ḠE is derived from the measurements. Earlier measurements of the molar excess enthalpy HE are combined with the -GE values to give the molar excess entropy SE. The “symmetry rule” (Haase, 1951) concerning the composition dependence of ḠE, -HE, and S̄E has been confirmed.

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