Question

Why do we need to balance a chemical reaction?

• A. Mass should be conserved.
• B. To balance number of radicals.
• C. To make chemical equation look much better.
• D. To increase the mass of products obtained.

Answer 1

Answer: (A), (B)

To balance number of radicals.

Mass can neither be created nor destroyed in a chemical reaction, i.e. mass is conserved in a chemical reaction. This implies that the number of radicals on the reactant and product side must be same. So, a chemical reaction is needed to be balanced.