There are different methods of balancing a chemical equation. We have already discussed hit and trial method. Today we will go through some examples of balanced chemical equations with answers.
Examples of Balanced Chemical Equations
1.CH4 +O2 → CO2 + H2O
Ans- CH4 +O2 → CO2 + 2H2O
2.Na+ H2O → NaOH + H2
Ans- 2Na+ 2H2O → 2NaOH + H2
3.Fe_2O3 + HCl → FeCl2 + H2O
Ans- Fe2O3 + 6HCl → 2FeCl2 +3 H2O
4.C2H6+ O2 → CO2 + H2O
Ans- 2C2H6+ 7O2 → 4CO2 + 6H2O
5.Fe+ O2 →Fe2O3
Ans- 4Fe+ 3O2 →2Fe2O3
6.KClO3 →KCl + O2
Ans- 2KClO3 →2KCl + 3O2
7.Fe + H2O →Fe3O4 + H2
Ans- 3Fe + 4H2O →Fe3O4 + 4H2
8.KMnO4 +HCl →KCl + MnCl2+ H2O+ Cl2
Ans- 2KMnO4 +16 HCl →2KCl + 2MnCl2+ 8H2O+ 5Cl2
9.KOH+ H2SO4 →K2SO4 + H2O
Ans- 2KOH+ H2SO4 →K2SO4 + 2H2O
10.Al(OH)3+ H2SO4 →Al2(SO4)3+ H2O
Ans- 2Al(OH)3+ 3H2SO4 →Al2(SO4)3+ 6H2O
11.KNO3 →KNO2 + O2
Ans- 2KNO3 →2KNO2 + O2
12.Al + O2→ Al2O3
Ans- 4Al + 3O2→ 2Al2O3
13.HNO3+Ca(OH)2 →Ca(NO3)2+ H2O
Ans- 2HNO3+Ca(OH)2 →Ca(NO3)2+ 2H2O
14.NaOH+ H2SO4 →Na2SO4+ H2O
Ans- 2NaOH+ H2SO4 →Na2SO4+ 2H2O
15.NaCl+ AgNO3→AgCl + NaNO3
Ans- NaCl+ AgNO3→AgCl + NaNO3
16.BaCl2+ H2SO4 →BaSO4 + HCl
Ans- BaCl2+ H2SO4 →BaSO4 + 2HCl
17.Ca(OH)2+CO2 →CaCO3+ H2O
Ans- Ca(OH)2+CO2 →CaCO3+ H2O
18.Zn+ AgNO3 →Zn(NO3)2 + Ag
Ans- Zn+ 2AgNO3 →Zn(NO3)2 + 2Ag
19.Al+CuCl2 →AlCl3+ Cu
Ans- 2Al+3CuCl2 →2AlCl3+ 3Cu
20.BaSO4 +K2SO4→BaSO4+KCl
Ans- BaSO4 +K2SO4→BaSO4+2KCl
21.KBr+ BaI2→ KI +BaBr2
Ans- 2KBr+ BaI2 →2KI BaBr2
21.ZnCO3 →ZnO +CO2
Ans- ZnCO3 →ZnO +CO2
22.H2+ Cl2 →HCl
Ans- H2+ Cl2 →2HCl
23.Mg +HCl →MgCl2+ H2
Ans- Mg +2HCl →MgCl2+ H2
24.AgBr →Ag+ Br2
Ans- 2AgBr →2Ag+ Br2
25.AgCl →Ag + Cl2
Ans- 2AgCl →2Ag + Cl2
26.Pb(NO3)2→PbO +NO2+O2
Ans- 2Pb(NO3)2→2PbO +4NO2+O2
27.FeSO4 → Fe2O3 +SO2 + SO3
Ans- 2FeSO4 → Fe2O3 +SO2 + SO3
28.H2S + Cl2→S + HCl
Ans- H2S + Cl2→S + 2HCl
29.Ba(OH)2 + HBr →BaBr2 + H2O
Ans-Ba(OH)2 + HBr →BaBr2 + H2O
30.KCN+ H2SO4 →K2SO4 + HCN
Ans- KCN+ H2SO4 →K2SO4 + HCN
31.Al + HCl →AlCl3 + H2
Ans- 2Al + 6HCl →2AlCl3 + 3H2
32.HgCl2 + SnCl2 → Hg2Cl2 + SnCl4
Ans- HgCl2 + SnCl2 → Hg2Cl2 + SnCl4
33.PbO2 + H2SO4 →PbSO4+ H2O+O2
Ans- 2PbO2 + 2H2SO4 →2PbSO4+ 2H2O+O2
34.Al + Fe2O3→Al2O3 + Fe
Ans- 2Al + Fe2O3→Al2O3 + 2Fe
35.N2 + 3H2 →NH3
Ans- N2 + 3H2 →2NH3
36.NH3+ HCl →NH4Cl
Ans- NH3+ HCl →NH4Cl
37.H2O →H2 + O2
Ans- 2H2O →2H2 + O2
38.NH4Cl →NH3 + HCl
Ans- NH4Cl →NH3 + HCl
39.NH3+ H2O →NH4OH
Ans- NH3+ H2O →NH4OH
40.Zn +H2SO4 →ZnSO4 +H2
Ans- Zn +H2SO4 →ZnSO4 +H2
41.BaCl2 + ZnSO4 →ZnCl2 + BaSO4
Ans- BaCl2 + ZnSO4 →ZnCl2 + BaSO4
42.NH3 + H2SO4 →(NH3)2SO4
Ans- 2NH3 + H2SO4 →(NH3)2SO4
43.CuO + H2 →Cu + H2O
Ans- CuO + H2 →Cu + H2O
44.NH4NO2 →H2O + N2
Ans- NH4NO2 →2H2O + N2
45.NaBr + Cl2 →NaCl + Br2
Ans- 2NaBr + Cl2 →2NaCl + Br2
46.MgO + C →CO2 + Mg
Ans- MgO + C →CO2 + Mg
47.CaCO3 + HCl →CaCl2 + H2O +CO2
Ans- CaCO3 + 2HCl →CaCl2 + H2O +CO2
48.Al2O3 + H2SO4 →Al2(SO4)3 + H2O
Ans- Al2O3 + 3H2SO4 →Al2(SO4)3 + 3H2O
49.Al2(SO4)3+ NaOH →Al(OH)3 + Na2SO4
Ans- Al2(SO4)3+ 6NaOH →2Al(OH)3 + 3Na2SO4
50. C+ O2 →CO2
Ans – C+ O2 →CO2
So, learn these examples of balanced chemical equations for your board exams. You can also learn Hit and Trail method to balance the chemical equations.