Answer:
2
Explanation:
Reaction Given:
KCIO₃(s) ---------> KCI(s) + O₂(g)
Balance Equation = ?
Solution:
Balance Chemical Equation:
A balanced chemical equation is that in which the number of the reactant atoms equal to the number of the product atom.
For example if the Chlorine at the reactant side is 3, the number of chlorine must be 3 on the product side.
Check the chemical equation and count the number of atoms at the reactant side and product side.
If the number of atoms of the reactants equal to the number of atoms of products then the reaction is balanced but if not equal then reaction is not balanced
Balancing is an trial and error process to get a balance reaction.
First we count the number of atoms of reactant and product
Number of atoms of Reactant:
K = 1
Cl = 1
O = 3
Number of atoms of Product:
K = 1
Cl = 1
O = 2
So this is not a balance equation as the atoms of the reactant atoms not equal to the number of the product atoms.
As there is 2 atoms of oxygen at the product side but 2 at reactant side so we balance this along with other
Balanced Equation:
2KCIO₃(s) ---------> 2KCI(s) + 3O₂(g)
Now count the number of atoms of reactant and product
Number of atoms of Reactant:
K = 2
Cl = 2
O = 6
Number of atoms of Product:
K = 2
Cl = 2
O = 6
Now this reaction is balanced as as the atoms of the reactant atoms equal to the number of the product atoms.
So, the Coefficient of KCIO₃ is 2 in balanced equation
