Answer Key

1. 2H₂ + O₂ → 2H₂O
2. H₂ + Cl₂ → 2HCl
3. 2Na + Cl₂ → 2NaCl
4. 2Mg + O₂ → 2MgO
5. 2Ca + O₂ → 2CaO
6. N₂ + 3H₂ → 2NH₃
7. 2K + Cl₂ → 2KCl
8. 4Al + 3O₂ → 2Al₂O₃
9. C + O₂ → CO₂
10. S + O₂ → SO₂
11. CH₄ + 2O₂ → CO₂ + 2H₂O
12. 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
13. C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
14. 4Fe + 3O₂ → 2Fe₂O₃
15. 2Al + 6HCl → 2AlCl₃ + 3H₂
16. Zn + 2HCl → ZnCl₂ + H₂
17. 2Na + 2H₂O → 2NaOH + H₂
18. Ca + 2H₂O → Ca(OH)₂ + H₂
19. 2KClO₃ → 2KCl + 3O₂
20. 2H₂O₂ → 2H₂O + O₂
21. 2CO + O₂ → 2CO₂
22. 2NO + O₂ → 2NO₂
23. 2SO₃ → 2SO₂ + O₂
24. Fe + 2HCl → FeCl₂ + H₂
25. CuO + H₂ → Cu + H₂O
26. Mg + 2HCl → MgCl₂ + H₂
27. NaOH + HCl → NaCl + H₂O
28. CaCO₃ → CaO + CO₂
29. 4NH₃ + 3O₂ → 2N₂ + 6H₂O
30. 2CH₃OH + 3O₂ → 2CO₂ + 4H₂O
31. C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
32. 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
33. Fe₂O₃ + 3CO → 2Fe + 3CO₂
34. 2Al + Fe₂O₃ → Al₂O₃ + 2Fe
35. Na₂O + H₂O → 2NaOH
36. 4P + 5O₂ → 2P₂O₅
37. 2H₂S + 3O₂ → 2SO₂ + 2H₂O
38. C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
39. C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
40. N₂ + 3H₂ → 2NH₃