Question

A ---------------------- reaction is a reaction in which both oxidation and reduction take place.

Answer 1

Red-ox reaction: The reaction in which both oxidation and reduction take place simultaneously is known as the red-ox reaction.

• The substance which participates in a reduction reaction or gains electrons from others is known as an oxidising agent.
• Example: Carbon$\left(\mathrm{C}\right)$ react reacts with Oxygen$\left({\mathrm{O}}_2\right)$ to give Carbon dioxide$\left({\mathrm{CO}}_2\right)$

$$\begin{gathered} \mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right) \\ \mathrm{Carbon}\mathrm{Oxygen}\mathrm{Carbon}\mathrm{dioxide} \end{gathered}$$

In the above reaction,

• Carbon participates in the oxidation reaction, therefore it is considered a reducing agent (R.A).
• Oxygen participates in the reduction reaction, therefore it is considered an oxidising agent (O.A)

Therefore a Red-ox reaction is a reaction in which both oxidation and reduction take place.