Average Activity Coefficients of NaBr in the Ternary System NaBr–Na2SO4–H2O Determined by the Cell Potential Method at 318.15 K

2021 ◽  
Author(s):  
Yan Yu Song ◽  
Yang Xiao Fu ◽  
Shi-Hua Sang ◽  
Xue Ping Zhang
Keyword(s):  
Ternary System ◽  
Activity Coefficients ◽  
Potential Method ◽  
Cell Potential ◽  
Average Activity

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

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