Question

2. The reaction 2Mg + Cl2 + MgCl2 is: (a) Oxidation reaction (b) Reduction reaction (c) Redox reaction (d) Displacement reaction ​

Answer 1

Explanation:

2Mg + Cl2 → MgCl2

This is a redox reaction

Answer 2

Answer:

The reaction $Mg+Cl_{2}$ → $MgCl_{2}$ is a redox reaction

Explanation:

Redox reaction is a reaction in which both reduction and oxidation happen simultaneously.

An increase in oxidation number indicates oxidation. Here the oxidation number of $Mg$ changes from 0 to +2. Hence $Mg$ undergoes oxidation.

A decrease in oxidation number indicates reduction. Here the oxidation number of $Cl$ changes from 0 to -1. Hence $Cl$ undergoes reduction.

Since both oxidation and reduction happen here, it is called a redox reaction.