Explanation:
A chemical reaction equation that contains equal number of atoms on both reactant and product side is known as a balanced chemical equation.
For example, when the products are given as [tex]Ca(ClO_{4})_{2}(aq) + H_{2}O(l)[/tex]
So, reactants for this equation will be as follows.
[tex]HClO_{4}(aq) + Ca(OH)_{2}(aq) \rightarrow Ca(ClO_{4})_{2}(aq) + H_{2}O(l)[/tex]
Number of atoms present on reactant side are as follows.
H = 3
Cl = 1
O = 6
Ca = 1
Number of atoms present on product side are as follows.
H = 2
Cl = 2
O = 9
Ca = 1
Therefore, to balance this equation we multiply [tex]HClO_{4}[/tex] by 2 on reactant side and multiply [tex]H_{2}O[/tex] by 2 on product side.
Hence, the balanced chemical reaction equation will be as follows.
[tex]2HClO_{4}(aq) + Ca(OH)_{2}(aq) \rightarrow Ca(ClO_{4})_{2}(aq) + 2H_{2}O(l)[/tex]