Answer: Option (c) is the correct answer.
Explanation:
In order to balance a chemical reaction equation, there must be equal number of reactants and products.
So, when the reactants and products are not equal then coefficients must be placed on both the sides in order to balance them.
For example, \(N_{2} + H_{2} \rightarrow NH_{3}\) is not a balanced equation as number of reactants and products are not the same.
Therefore, to balance the equation multiply \(H_{2}\) by 3 and multiply \(NH_{3}\) by 2.
Hence, the equation will be balanced as follows.
\(N_{2} + 3H_{2} \rightarrow 2NH_{3}\)
Thus, we can conclude that if the amount of atoms of each type on the left and right sides of a reaction differs, then to balance it coefficients are placed in front of the reactants and/or products.
