Réactions dans le sulfolane. III. Etude des interactions eau–sulfolane

1968 ◽  
Vol 46 (20) ◽  
pp. 3215-3219 ◽  
Author(s):  
R. L. Benoit ◽  
G. Choux
Keyword(s):  
Water Activity ◽  
Thermodynamic Functions ◽  
Proton Acceptor ◽  
Acidity Function ◽  
Vapor Pressures ◽  
Heat Of Solution ◽  
Sulfone Group ◽  
Heats Of Mixing ◽  
Excess Thermodynamic Functions ◽  
System Water

Heats of mixing at 30 °C and vapor pressures at 30, 40, and 50 °C have been measured for the system water–sulfolane. The excess thermodynamic functions ΔGE, ΔHM, and ΔSE have been calculated. The value of the heat of solution [Formula: see text] indicates that the sulfone group is a weak proton acceptor. The effects of water activity on the H− acidity function values in hydroxide media have been compared for the systems water–sulfolane and water–dimethylsulfoxide.

APPLICATION OF QUASI-LATTICE THEORY TO ALCOHOL – CARBON TETRACHLORIDE SYSTEMS

1963 ◽  
Vol 41 (2) ◽  
pp. 278-286 ◽  
Author(s):  
B. Dacre ◽  
G. C. Benson
Keyword(s):  
Carbon Tetrachloride ◽  
Thermodynamic Functions ◽  
Lattice Theory ◽  
Experimental Results ◽  
Heats Of Mixing ◽  
Excess Thermodynamic Functions

Values of heats of mixing are reported for methanol, n-butanol, and n-octanol with carbon tetrachloride at 25 °C. The experimental results are combined with data from other sources and an analysis of the excess thermodynamic functions for carbon tetrachloride solutions of methanol, ethanol, n-propanol, n-butanol, and n-octanol in terms of Barker's theory of solutions is described. The behavior of these systems can be reproduced fairly well by the Barker model.

scholarly journals Notizen:Mischungsenthalpien beim flüssigen System Wasser + Essigsäure / Heats of Mixing for the Liquid System Water + Acetic Acid

1972 ◽  
Vol 27 (10) ◽  
pp. 1527-1529 ◽  
Author(s):  
R. Haase ◽  
P. Steinmetz ◽  
K.-H. Dücker
Keyword(s):  
Acetic Acid ◽  
Power Series ◽  
Liquid System ◽  
Heat Of Mixing ◽  
Pure Liquid ◽  
Calorimetric Measurements ◽  
Heats Of Mixing ◽  
Free Parameters ◽  
C 30 ◽  
System Water

Calorimetric measurements of the heats of mixing for the liquid system water+acetic acid at 17 °C, 20 °C, 25 °C, 30 °C, 40 °C, and 50 °C show that there is a change of sign in the function H̅E(x), where H̅E denotes the molar heat of mixing and x the mole fraction of acetic acid. The process of mixing the pure liquid components is weakly exothermic for low acid concentrations, but strongly endothermic for high acid concentrations. The function H̅E can be approximately represented by the usual power series with respect to x, five free parameters at each temperature being necessary.

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