Balancing Chemical Equations Homework worksheet with numbered problems for practice.

1) N₂ + 3H₂ → 2NH₃
2) KClO₃ → KCl + 3/2O₂ (or 2KClO₃ → 2KCl + 3O₂)
3) NaCl + F₂ → NaF + Cl₂ (or 2NaCl + F₂ → 2NaF + Cl₂)
4) H₂ + O₂ → H₂O (or 2H₂ + O₂ → 2H₂O)
5) Al₂O₃ + MgCl₂ → AlCl₃ + MgO (or Al₂O₃ + 3MgCl₂ → 2AlCl₃ + 3MgO)
6) AlBr₃ + K₂SO₄ → KBr + Al₂(SO₄)₃ (or 2AlBr₃ + 3K₂SO₄ → 6KBr + Al₂(SO₄)₃)
7) CH₄ + O₂ → CO₂ + H₂O (or CH₄ + 2O₂ → CO₂ + 2H₂O)
8) Fe + O₂ → Fe₂O₃ (or 4Fe + 3O₂ → 2Fe₂O₃)
9) C₃H₈ + O₂ → CO₂ + H₂O (or C₃H₈ + 5O₂ → 3CO₂ + 4H₂O)
10) FeCl₃ + NaOH → Fe(OH)₃ + NaCl (or FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl)
11) P₄ + O₂ → P₄O₁₀ (or P₄ + 5O₂ → P₄O₁₀)
12) H₂ + N₂ → NH₃ (or 3H₂ + N₂ → 2NH₃)
13) Ag₂O → Ag + O₂ (or 2Ag₂O → 4Ag + O₂)
14) S₈ + O₂ → SO₂ (or S₈ + 8O₂ → 8SO₂)
15) CO₂ + H₂O → C₆H₁₂O₆ + O₂ (or 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂)
16) Zn + Mg(NO₃)₂ → Mg + Zn(NO₃)₂ (or Zn + Mg(NO₃)₂ → Mg + Zn(NO₃)₂ - already balanced)
17) KI + CaSO₄ → CaI₂ + K₂SO₄ (or 2KI + CaSO₄ → CaI₂ + K₂SO₄)
18) HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂ (or HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂ - already balanced)
19) H₂O → H₂ + O₂ (or 2H₂O → 2H₂ + O₂)
20) NaBr + CaF₂ → NaF + CaBr₂ (or 2NaBr + CaF₂ → 2NaF + CaBr₂)