Redox Reactions

Redox (reduction-oxidation) reactions are a family of reactions that are concerned with the transfer of electrons between reactants. Redox reactions are a matched pair – you don’t have an oxidation reaction without a reduction reaction happening at the same time. Oxidation means loss of electrons while reduction means gain of electrons. Each reaction by itself is called a “half-reaction”, simply because we need two half-reactions to form a whole reaction.  We write them out like this.

Mixing  magnesium powder and copper oxide together – a displacement reaction.

The copper ion has gained 2 electrons, and is reduced, the Mg atom has lost 2 electrons and is oxidised

The OILRIG rule: Oxidation is loss, reduction is gain of electrons.

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One thought on “Redox Reactions

  1. Fundamentally redox reactions are a family of reactions that are .concerned with the transfer of electrons between species. Oxidation refers to the loss of while reduction refers to the gain of electrons.

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