Oxidation‐reduction reactions in geochemistry. Issue 2 (24th April 2021)

• Record Type: Journal Article
• Authors: Biswas, Salah Uddin; Karmakar, Kripasindhu; Saha, Bidyut
• Is Part Of: Vietnam journal of chemistry. Volume 59:Issue 2(2021)
• Page Start: 133
• Page End: 145
• Publication Date: 2021-04-24
• Subjects: Elements -- Geochemistry -- Oxidation -- Reduction -- Redox process -- Potential; Chemistry -- Periodicals; 540
• DOI: 10.1002/vjch.202000196
• Languages: English
• ISSNs: 0866-7144

Abstract

Abstract: There are more than hundred elements in the periodic table and many of them are associated with various geochemical processes. Most of the elements can show more than one oxidation states, therefore, reactions involving oxidation and reduction are of very much importance in geochemistry. Since every change (chemical or physical) is associated with the change of energy, hence for every single process, there should be a reliable way for quantitative measurement of energy change. In case of any redox process, the energy change can be quantitatively expressed in terms of reduction potential of that process. For better understanding of a geochemical process, previously known reduction potentials can be used. The main importance of reduction potentials in geochemistry is for understanding the frequent concentration and enrichment of various elements in deposits formed under extremely reducing or oxidizing conditions.