Explanation:
A. AgNO3 + KCl --> AgCl + KNO3
Reaction is already balanced.
Type = Double Replacement
B. H2O + SO3 --> H2SO4
Reaction is already balanced.
Type = Synthesis
C. KI + Cl2 --> KCl + I2
Balanced Equation = 2KI + Cl2 --> 2KCl + I2
Type = Single Replacement
D. NaHCO3 --> Na2CO3 + H2O + CO2
Balanced Equation = 2NaHCO3 --> Na2CO3 + H2O + CO2
Type = Decomposition
E. Zn + HCl  --> ZnCl2 + H2
Balanced Equation = Zn + 2HCl  --> ZnCl2 + H2
Type = Single Replacement
F. BaCl2 + Na2SO4 --> BaSO4 + NaCl
Balanced Equation =  BaCl2 + Na2SO4 → 2NaCl + BaSO4 Â
Type = Double Replacement
G. C3H8 + O2 --> CO2 + H2O
Balanced Equation =  C3H8 + 5O2 → 3CO2 + 4H2O Â
Type = Single Replacement
H. Al + CuCl2 --> AlCl3 + Cu
Balanced Equation =  2Al + 3CuCl2 → 2AlCl3 + 3Cu Â
Type = Single Replacement