a. The given chemical equation represents a decomposition reaction.
The balanced chemical equation for the decomposition of KClO3 is:
2KClO3 -> 2KCl + 3O2
In this reaction, KClO3 decomposes into KCl and O2 gas.
b. The given chemical equation represents a combustion reaction.
The balanced chemical equation for the combustion of C3H8 with O2 is:
C3H8 + 5O2 -> 3CO2 + 4H2O
In this reaction, C3H8 is the fuel and O2 is the oxidizing agent. When fuel combines with oxygen, it undergoes combustion to produce carbon dioxide and water.
c. The given chemical equation represents a single replacement reaction.
The balanced chemical equation for the reaction between Al and HCl is:
2Al + 6HCl -> 2AlCl3 + 3H2
In this reaction, Al replaces hydrogen from HCl to form AlCl3 and hydrogen gas is evolved.
d. The given chemical equation represents a double displacement reaction.
The balanced chemical equation for the reaction between Sr(NO3)2 and K2SO4 is:
Sr(NO3)2 + K2SO4 -> 2KNO3 + SrSO4
In this reaction, the cations and anions of the reactants exchange places to form the products.