Question

(c) Why do we need to balance chemical equations?

Answer 1

• According to the Law of conservation of mass, atoms can neither be created nor be destroyed during a chemical reaction.
• Thus, a chemical equation needs to be balanced to make the number of atoms of each element on either side equal.
• Example: <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${C+O}_2$ → <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${CO}_2$ , is a balanced equation where the number of atoms of each element on reactant and product side are equal.