In an oxidation-reduction reaction, what substance is reduced always?

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In an oxidation-reduction reaction, what substance is reduced always?

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Answer 1 · 2016-02-05T18:00:34

The OXIDANT is always reduced in a redox reaction.

Explanation:

Formally, a species that gains electrons is reduced, and a species that loses electrons is oxidized. When oxygen (typically) is reacted with a hydrocarbon fuel, the oxygen is formally reduced to $CO_2$ , in which the oxygen number of $O$ is $-II$ , REDUCED from the zerovalent elemental state. On the other hand, the $C$ has been oxidized from $-II$ or so to $+IV$ .

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In an oxidation-reduction reaction, what substance is reduced always?

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