Redox pairs and redox potential
Oxidation and reduction applied to water treatment - General principles

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Redox pairs and redox potential
Oxidation and reduction applied to water treatment - General principles

Authors : Sylvie BAIG, Pierre MOUCHET

Review date: October 23, 2020 | Lire en français

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2. Redox pairs and redox potential

In fact, the reactions and are equilibria, liable, depending on the conditions of the medium, to shift to the left or to the right. In both cases, electron transfer takes place between an oxidant (respectively Fe3+ or O2) and a conjugate reductant (respectively Fe2+ or H2O) according to the general formula :

accepteur+n  électrons⇄donneur

i.e. :

Oxydant+n  électrons⇄Réducteur
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