What is an oxidation reaction ? Identify in the following reaction (i) the substance oxidised, and (ii) the substance reduced :

$Z n O + C ⟶ Z n + C O$

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Solution

Oxidation is the loss of electrons during a reaction by a molecule, atom or ion.

Oxidation occurs when the oxidation state of a molecule, atom or ion is increased. The opposite process is called reduction, which occurs when there is a gain of electrons or the oxidation state of an atom, molecule, or ion decreases.

(i) Carbon is Oxidised
(ii) ZnO is reduced.

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