oxidation

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oxidation Specifically, a reaction in which oxygen combines with, or hydrogen is removed from, a substance. More generally, any reaction in which an atom loses electrons. For example, in the reaction between zinc and copper sulphate:Zn + Cu2+ + SO42− → Zn2+ + SO42− + Cuthe zinc has lost two electrons and been oxidized. Conversely the copper has undergone reduction.

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