1. Balancing Chemical Equations
Can you balance these chemical reactions?

2. Question 1 Balance the following chemical reaction:
Y(NO3)2 + GaPO4  YPO4 + Ga(NO3)2

3. Question 2 Balance the following chemical reaction:
Hg2I2 + O2  Hg2O + I2
2Hg2I2 + O2  2Hg2O + 2I2

4. Question 3 Balance the following chemical reaction:
CF4 + Br2  CBr4 + F2
CF4 + 2Br2  CBr4 + 2F2

5. Question 4 Balance the following chemical reaction:
When oxygen and hydrogen are combined, they produce water.
O2 + 2H2  2H2O

6. Question 5 Balance the following chemical reaction:
OsO4 + PtCl4  PtO2 + OsCl8
OsO4 + 2PtCl4  2PtO2 + OsCl8

7. Question 6 Balance the following chemical reaction:
Fe2O3 + H2O  Fe(OH)3
Fe2O3 + 3H2O  2Fe(OH)3

8. Question 7 Balance the following chemical reaction:
When nitric acid is added to a solid piece of copper, hydrogen gas and copper (II) nitrate are produced. (Nitrate is NO3-1)
2HNO3 + Cu  H2 + Cu(NO3)2

9. Question 8 Balance the following chemical reaction:
HNO3 + Mg(OH)2  H2O + Mg(NO3)2
2HNO3 + Mg(OH)2  2H2O + Mg(NO3)2

10. Question 9 Balance the following chemical reaction:
H3PO4 + NaBr  HBr + Na3PO4
H3PO4 + 3NaBr  3HBr + Na3PO4

11. Question 10 Balance the following chemical reaction:
Potassium chlorate decomposes to form potassium chloride and oxygen. (chlorate is ClO3-1)
2KClO3  2KCl + 3O2

12. Question 11 Balance the following chemical reaction: C + H2  C3H8

13. Question 12 Balance the following chemical reaction:
NaI + Pb(SO4)2  PbI4 + Na2SO4
4NaI + Pb(SO4)2  PbI4 + 2Na2SO4

14. Question 13 Balance the following chemical reaction:
Dicarbon octahydride is burned in oxygen gas as a result, carbon dioxide and water are produced.
C2H8 + 4O2  2CO2 + 4H2O

15. Question 14 Balance the following chemical reaction:
HNO3 + Fe(OH)3  H2O + Fe(NO3)3
3HNO3 + Fe(OH)3  3H2O + Fe(NO3)3

16. Question 15 Balance the following chemical reaction:
H2SO4 + NH4OH  H2O (NH4)2SO4
H2SO4 + 2NH4OH  2H2O (NH4)2SO4

17. Question 16 Balance the following chemical reaction:
Potassium chloride combines with magnesium hydroxide to form potassium hydroxide and magnesium chloride. (hydroxide is OH-1)
2KCl + Mg(OH)2  2KOH + MgCl2

18. Question 17 Balance the following chemical reaction:
NH3 + O2  NO + H2O
4NH3 + 5O2  4NO + 6H2O

19. Question 18 Balance the following chemical reaction:
Sodium oxide decomposes to sodium and oxygen
2Na2O  4Na + O2

20. Question 19 Balance the following chemical reaction:
VF5 + HI  V2I10 + HF
2VF5 + 10HI  V2I HF

21. Question 20 Balance the following chemical reaction:
C6H6 + O2  H2O + CO2
2C6H6 + 15O2  6H2O + 12CO2