Thermodynamic stability relations in redox systems.
Graphical stability relations in redox systems known as Pourbaix diagrams are analyzed employing the concept of overall stability of chemical species in multiple chemical reaction systems recently developed by us (Fishtik, I. J. Phys. Chem. B 2005, 109, 3851). The overall stability approach provides a simple and systematic algorithm for generating thermodynamically and stoichiometrically consistent Pourbaix diagrams that are referred to as overall Pourbaix diagrams. The conditions under which the conventional Pourbaix diagrams coincide with the overall Pourbaix diagrams are also discussed.
Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts 01609-2280, USA. ifishtik@wpi.edu
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D000465:Algorithms; D002627:Chemistry, Physical / Q000379:methods*; D003196:Computer Graphics; D003627:Data Interpretation, Statistical; D004563:Electrochemistry; D010084:Oxidation-Reduction; D013816:Thermodynamics