Complete the following table:
Reductant
Oxidant
Reaction
CuO + H2- → Cu +H2O
Mg + O₂ → 2Mgo
Fe + S → FeS
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An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
In the reaction : CuO+H
2
⟶Cu+H
2
O
n the reaction H
2
is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.
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