An exact quasi-chemical equation for excess heat capacity with W-shaped concentration dependence

1997 ◽  
Vol 133 (1-2) ◽  
pp. 105-127 ◽  
Author(s):  
J.C. Cobos
2003 ◽  
Vol 68 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Mirjana Kijevcanin ◽  
A.B. Djordjevic ◽  
Ivona Grguric ◽  
Bojan Djordjevic ◽  
Slobodan Serbanovic

In this work the Peng-Robinson-Stryjek-Vera (PRSV) equation of state coupled with the Huron-Vidal-Orbey-Sandler (HVOS) rule was tested for the correlation of the excess enthalpy (HE) and the excess heat capacity (cp E) alone and simultaneously. The HVOS mixing rule incorporates the NRTL equation as the GE model. All calculations were performed using the linear and reciprocal forms of the temperature dependent parameters of the models. For all the evaluations the 1,4-dioxane+n-alkane systems were chosen having in mind the unusually W-shaped concentration dependence of cp E for these systems. The correlation of the HE and cp E data alone for all the investigated systems using four coefficients and for the simultaneous correlation of HE+cp E data using six coefficients of the temperature dependent parameters of the PRSV-HVOS models could be considered as being very satisfactory.


1999 ◽  
Vol 64 (7) ◽  
pp. 1093-1099 ◽  
Author(s):  
Ivona Malijevská ◽  
Anatol Malijevský

Temperature dependence of GE is discussed for three widely used equations linear and nonlinear in parameters. It is shown that the Wilson equation predicts always positive excess heat capacity regardless of values of its parameters. Several temperature modifications of the Redlich-Kister, Wilson and NRTL equations are discussed with respect to the sign of the excess Gibbs energy, excess enthalpy and excess heat capacity.


Author(s):  
Ari David Brown ◽  
Regis Brekosky ◽  
Felipe Colazo-Petit ◽  
Matthew Greenhouse ◽  
James Hay-Wehle ◽  
...  

2011 ◽  
Vol 357 (2) ◽  
pp. 534-537 ◽  
Author(s):  
Yu Matsuda ◽  
Hitoshi Kawaji ◽  
Tooru Atake ◽  
Yasuhisa Yamamura ◽  
Shuma Yasuzuka ◽  
...  

2017 ◽  
Vol 112 (3) ◽  
pp. 42a-43a
Author(s):  
Paulo F. Almeida ◽  
Emmanuel Tejada ◽  
Faith Carter ◽  
Antje Pokorny

2010 ◽  
Vol 38 (3) ◽  
pp. 185-191 ◽  
Author(s):  
Artur Benisek ◽  
Edgar Dachs

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