What are 20 examples of combination reaction?

Answer 1

4K +O2 --> 2K2O

2Zn + O2 --> 2ZnO

4Fe + 3O2 --> 2Fe2O3

2 Cu+ O2 --> 2CuO

K2O +H2O --> 2KOH

CaO + 2H2O --> Ca(OH)2

2Na + Cl2 --> 2NaCl

2Fe + 3Cl2 --> 2FeCl3

Zn + S --> ZnS

Fe + F --> FeS

3Ca + N2 --> Ca3N2

3Mg + N2 --> Mg3N2

C + O2 --> CO2

S + O2 --> SO2

N2 + O2 --> 2NO

4P + 5O2 --> 2P2O5

SO2 + H2O --> H2SO3

SO3 + H2O --> H2SO4

P2O5 + 3H2O ---> 2H3PO

Answer 2

1. Rusting of iron
2. Formation of water from hydrogen and oxygen
3. Formation of ammonia from nitrogen and hydrogen
4. Synthesis of magnesium oxide from magnesium and oxygen
5. Formation of sodium chloride from sodium and chlorine
6. Synthesis of sulfur dioxide from sulfur and oxygen
7. Combustion of methane in oxygen
8. Formation of carbon dioxide from carbon and oxygen
9. Synthesis of calcium oxide from calcium and oxygen
10. Reaction between aluminum and chlorine to form aluminum chloride
11. Synthesis of nitrogen dioxide from nitrogen and oxygen
12. Formation of hydrogen sulfide from hydrogen and sulfur
13. Combustion of hydrogen gas in oxygen
14. Reaction between copper and oxygen to form copper oxide
15. Synthesis of potassium bromide from potassium and bromine
16. Formation of zinc oxide from zinc and oxygen
17. Combustion of propane in air
18. Reaction between magnesium and nitrogen to form magnesium nitride
19. Synthesis of silicon dioxide from silicon and oxygen
20. Formation of calcium carbonate from calcium, carbon, and oxygen