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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 23 (2018) pp 78-81

Balancing Complex Chemical Redox Reactions: An Evaluation of the Methods

Ivan L. Dukov

Department of General and Inorganic Chemistry, University of Chemical Technology and Metallurgy, 8 Kliment Okhridski Blvd., 1756 Sofia, Bulgaria,
Received February 20, 2018. Accepted April 18, 2018.

Published: 27 April 2017

Abstract. An evaluation of the methods used for balancing of complex redox reactions has been done. Although the algebraic method (material balance method) is based on the law of mass conservation in the chemical reactions, it is not popular among the chemists because of the mathematical difficulties. It was shown that a variation of the method called “a modified form of the algebraic method” permits to balance the reactions easier and faster by elementary mathematical calculations. The oxidation number method, commonly used in the chemistry, can also be applied successfully for the balancing of even very complex redox reactions.

Key Words: In the Classroom; general chemistry; balancing of complex redox reactions; algebraic method; variation of the algebraic method; oxidation number method

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