What is an oxidation reaction? Identify in the following reaction (a) the substance oxidized, and (b) the substance reduced:

ZnO + C → Zn + CO

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Solution

The reaction which involves gain of oxygen, loss of hydrogen or loss of electrons is defined as the oxidation reaction.

(a) In the given reaction, C is gaining oxygen, so it is oxidized.
(b) Whereas zinc(Zn) is losing oxygen, so it is reduced.

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