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Initial Steps in the Reaction of H2O2 with Fe2+ and Fe3+ Ions: Inconsistency in the Free Radical Theory

Initial Steps in the Reaction of H2O2 with Fe2+ and Fe3+ Ions: Inconsistency in the Free Radical Theory

Authors :
Mordechai L. Kremer
Source :
Reactions, Vol 4, Iss 1, Pp 171-175 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Consideration of the changes in free energy shows that the assumed initial steps in reactions of H2O2 with Fe2+ and Fe3+ in the free radical theory are not consistent. The free radical theory is unable to account for the Fe3+-initiated decomposition of H2O2 or for oxidations by it. In reactions with Fe2+ ions at high [H2O2], where O2 evolution reaches a limit, such limit is not foreseen by the free radical model. At lower [H2O2], because of a disallowed substitution in the equation used, the interpretation is not valid. It appears, therefore, that free radicals derived from H2O2 do not provide a suitable basis for constructing models for these reactions. Non-radical models are more successful in interpreting experimental results.

Details

Language :
English
ISSN :
2624781X
Volume :
4
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Reactions
Publication Type :
Academic Journal
Accession number :
edsdoj.7666a6d0a920410eab812f96e825e96a
Document Type :
article
Full Text :
https://doi.org/10.3390/reactions4010010