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What is Chemical Species

Chapter 4
Handbook of Research on Emerging Developments and Environmental Impacts of Ecological Chemistry
Atoms, molecules, molecular fragments, ions, etc., subjected to a chemical process or to a measurement.
Published in Chapter:
Thermodynamic Stability of Natural Aqueous Systems
Igor Povar (Institute of Chemistry, Moldova), Oxana Spinu (Institute of Chemistry, Moldova), Tudor Lupascu (Institute of Chemistry, Moldova), and Gheorghe Duca (Institute of Chemistry, Moldova State University, Moldova)
Copyright: © 2020 |Pages: 33
DOI: 10.4018/978-1-7998-1241-8.ch004
Abstract
Long-term prediction of the complex chemical processes and their practical consequences is only feasible by using simulation models. The chapter presents a thermodynamic approach to the study of complex chemical equilibria in natural aqueous multicomponent systems. Its quintessence consists in the thermodynamic analysis of the conditions of various processes on the basis of derived overall thermodynamic characteristics. Ways to shift from chemical-analytical, descriptive characteristics in heterogeneous multicomponent systems “mineral – natural aqueous systems” to the quantitative study of involved chemical equilibria by thermodynamic and computer modeling are extensively described. The analyzed chemical processes include the heterogeneous interaction of minerals and aqueous solution, homogeneous reactions of hydrolysis, complex formation, and acid-base equilibria.
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