The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.
The given equation is
Fe2O3 + CO → Fe + CO2
To balance the given equation we have to note the number of atoms present om both sides
|Atom||Reactant Side||Product Side|
From the above table, we note that
- There are two iron atoms on the reactant side. So, we have to add coefficient 2 before iron on the product side
- There are four oxygen atoms on the reactant side. So, we have to add a coefficient of 2 before carbon dioxide on the product side.
Fe2O3 + CO → 2Fe + 2CO2
- To make the carbon atoms equal let us add coefficient 3 on both sides of the reaction.
The balanced chemical equation is
Fe2O3 + 3CO → 2Fe + 3CO2
Check out the video given below to know how to balance chemical equations