Determination of the Thermodynamic Equilibrium State of a Multicomponent and Multi-Reacting System
The study of processes involving several chemical species in solution (e.g., electrochemistry, geochemistry, biochemistry, hydrometallurgy, chemical analysis, and environmental chemistry) generally requires a precise knowledge of the stability of the different species present in the system in each phase, as well as their coexistence.
The thermodynamic equilibrium of the components of the system provides a useful model to determine the stability of its species and phases. The law of mass action allows calculating the chemical composition of a given system at equilibrium [1].
For a large number of chemical species or equilibria, it is necessary to use iterative calculations in order to determine the thermodynamic equilibrium of the system, due to the set of nonlinear equations (e.g., mass or charge balance of each phase and the law of mass action of each of the independent equilibria).
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Gonzalez, I., Rojas-Hernández, A. (2014). Predominance-Zone Diagrams for Chemical Species. In: Kreysa, G., Ota, Ki., Savinell, R.F. (eds) Encyclopedia of Applied Electrochemistry. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6996-5_131
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