Thermodynamic properties of binary systems containing hexafluorobenzene. Part 3.—Excess Gibbs free energy of the system hexafluorobenzene + cyclohexane

1968 ◽  
Vol 64 (0) ◽  
pp. 637-647 ◽  
Author(s):  
W. J. Gaw ◽  
F. L. Swinton
Keyword(s):  
Free Energy ◽  
Thermodynamic Properties ◽  
Gibbs Free Energy ◽  
Binary Systems ◽  
Excess Gibbs Free Energy

Modeling of the Thermodynamic Properties of Liquid Fe-Ni and Fe-Co Alloys From the Surface Tension Data

2011 ◽  
Vol 56 (1) ◽  
pp. 13-23 ◽  
Author(s):  
W. Gąsior ◽  
P. Fima ◽  
Z. Moser
Keyword(s):  
Surface Tension ◽  
Free Energy ◽  
Surface Layer ◽  
Thermodynamic Properties ◽  
Gibbs Free Energy ◽  
Thermodynamic Data ◽  
Excess Gibbs Free Energy ◽  
Surface Tension Data ◽  
Co Alloys ◽  
Good Agreement

Modeling of the Thermodynamic Properties of Liquid Fe-Ni and Fe-Co Alloys From the Surface Tension DataRecently proposed method of modeling of thermodynamic properties of liquid binary alloys from their surface tension data is described. The method utilizes Melford and Hoar equation, relating surface tension with excess Gibbs free energy, combined with new description of the monatomic surface layer and β parameter. The method is tested on Fe-Ni and Fe-Co alloys and the obtained results show very good agreement with experimental thermodynamic data of other authors. The model allows also to calculate the surface tension from thermodynamic data, and it gives better agreement with experimental results than those modeled with the use of Butler equation and traditionally defined monatomic surface layer and β = 0.83.

AApplication of the Congruence Principle to Viscosities of 1-Chloroalkane Binary Mixtures

1971 ◽  
Vol 49 (16) ◽  
pp. 2631-2635 ◽  
Author(s):  
B. M. Coursey ◽  
E. L. Heric
Keyword(s):  
Free Energy ◽  
Gibbs Free Energy ◽  
Chain Length ◽  
Kinematic Viscosity ◽  
Binary Systems ◽  
Excess Gibbs Free Energy ◽  
Average Chain Length ◽  
Free Energy Of Activation ◽  
Congruence Principle ◽  
Chain Lengths

Viscosities are reported at 25 °C in five 1-chloroalkane binary systems. Mixture data are presented both as kinematic viscosity and as excess Gibbs free energy of activation for flow. The latter quantity is correlated with the average chain length in the mixtures by graphical and analytical forms of Brønsted and Koefoed's principle of congruence. This correlation serves as a basis for prediction of mixture viscosities for 1-chloroalkane pairs having chain lengths within the observed extremes: 1-chlorobutane and 1-chlorooctadecane. Errors as kinematic viscosity by this method are less than 5.5% for the systems studied.

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