Question
What is a balanced chemical equation? Why should chemical equations be balanced?

Answer

A chemical reaction in which atoms of different elements of reactant and product side are equal then the chemical equation is called balanced chemical equation.
Now, according to the law of conservation of mass, matter can neither be created, nor be destroyed. Hence in a chemical reaction, mass of reactants should be equal to the mass of products.
Number of atoms of each element should be equal on both side of the reaction for keeping mass constant.
Hence, it is essential to balance the chemical equation.

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