Question

How do you know if it is a redox reaction?

Answer 1

The redox reaction can be explained as follows:

1. In a chemical reaction (oxidation reaction and reduction reaction) whether there is a change in the oxidation number then it is called a redox reaction.
2. In an oxidation reaction, the element loses electrons or increases in oxidation number. In a reduction reaction, the element gains electrons or decreases in oxidation number.
3. The below equation clearly explains the redox reaction:

$\mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{Cu}}^{+2}\left(\mathrm{aq}\right)\underset{}{\overset{}{\to }}{\mathrm{Zn}}^{+2}\left(\mathrm{aq}\right)+\mathrm{Cu}\left(\mathrm{s}\right)$

Therefore, the above points clearly explains the redox reaction.