Question

Write a short note on what are the knowledge requited involve to balance a chemical equation​

Answer 1

• A chemical change is represented by a chemical equation.

• When the number of atoms of different elements on reactant and product side are equal then the chemical equation is called a balanced chemical equation.

• It is important to balance a chemical equation and to have the knowledge of balancing a chemical equation because -

1. To validate the law of conservation of mass which states that the mass of reactants should be equal to the mass of the products. The total mass of a system is thus conserved. This law holds true only if number of atoms of reactants reacting together is equal to the number of the product atoms formed.
2. A balanced chemical equation tells us about the physical state of the reactants and products whether they are solid, liquid or gas for aqueous.
3. It tells us about heat changes that can take place in a chemical reaction.