# Reaction equations problems and solutions

1. What is the balanced chemical equation for the reaction of Hydrogen (H₂) with Oxygen (O₂) to produce Water (H₂O)? Solution: The balanced chemical equation is 2H₂ + O₂ → 2H₂O.

2. What is the balanced chemical equation for the combustion of Methane (CH₄)? Solution: The balanced chemical equation is CH₄ + 2O₂ → CO₂ + 2H₂O.
3. What products are formed when Sodium (Na) reacts with Chlorine (Cl₂)? Solution: The product formed is Sodium Chloride (NaCl). The balanced chemical equation is 2Na + Cl₂ → 2NaCl.
4. What is the balanced chemical equation for the decomposition of Sodium Bicarbonate (NaHCO₃)? Solution: The balanced chemical equation is 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O.
5. What products are formed when Nitrogen (N₂) reacts with Hydrogen (H₂)? Solution: The product formed is Ammonia (NH₃). The balanced chemical equation is N₂ + 3H₂ → 2NH₃.
6. What is the balanced chemical equation for the reaction of Aluminum (Al) with Hydrochloric Acid (HCl) to produce Aluminum Chloride (AlCl₃) and Hydrogen (H₂)? Solution: The balanced chemical equation is 2Al + 6HCl → 2AlCl₃ + 3H₂.
7. What products are formed when Potassium (K) reacts with Water (H₂O)? Solution: The products formed are Potassium Hydroxide (KOH) and Hydrogen (H₂). The balanced chemical equation is 2K + 2H₂O → 2KOH + H₂.
8. What is the balanced chemical equation for the reaction of Sulfuric Acid (H₂SO₄) with Sodium Hydroxide (NaOH)? Solution: The balanced chemical equation is H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O.
9. What products are formed when Calcium Carbonate (CaCO₃) is heated? Solution: The products formed are Calcium Oxide (CaO) and Carbon Dioxide (CO₂). The balanced chemical equation is CaCO₃ → CaO + CO₂.
10. What is the balanced chemical equation for the reaction of Hydrogen Peroxide (H₂O₂)? Solution: The balanced chemical equation is 2H₂O₂ → 2H₂O + O₂.
11. What products are formed when Iron (II) Sulfate (FeSO₄) is heated? Solution: The products formed are Iron (II) Oxide (FeO), Sulfur Dioxide (SO₂) and Oxygen (O₂). The balanced chemical equation is 2FeSO₄ → 2FeO + 2SO₂ + O₂.
12. What is the balanced chemical equation for the reaction of Barium Chloride (BaCl₂) with Sodium Sulfate (Na₂SO₄)? Solution: The balanced chemical equation is BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl.
13. What products are formed when Zinc (Zn) reacts with Hydrochloric Acid (HCl)? Solution: The products formed are Zinc Chloride (ZnCl₂) and Hydrogen (H₂). The balanced chemical equation is Zn + 2HCl → ZnCl₂ + H₂.
14. What is the balanced chemical equation for the reaction of Nitric Acid (HNO₃) with Potassium Hydroxide (KOH)? Solution: The balanced chemical equation is HNO₃ + KOH → KNO₃ + H₂O.
15. What products are formed when Magnesium (Mg) reacts with Oxygen (O₂)? Solution: The product formed is Magnesium Oxide (MgO). The balanced chemical equation is 2Mg + O₂ → 2MgO.
16. What is the balanced chemical equation for the reaction of Phosphorus (P₄) with Oxygen (O₂)? Solution: The balanced chemical equation is P₄ + 5O₂ → P₄O₁₀.
17. What products are formed when Copper (Cu) reacts with Nitric Acid (HNO₃)? Solution: The products formed are Copper Nitrate (Cu(NO₃)₂), Water (H₂O) and Nitrogen Dioxide (NO₂). The balanced chemical equation is 3Cu + 8HNO₃ → 3Cu(NO₃)₂ + 4H₂O + 2NO₂.
18. What is the balanced chemical equation for the reaction of Sodium Hydroxide (NaOH) with Hydrochloric Acid (HCl)? Solution: The balanced chemical equation is NaOH + HCl → NaCl + H₂O.
19. What products are formed when Aluminum (Al) reacts with Oxygen (O₂)? Solution: The product formed is Aluminum Oxide (Al₂O₃). The balanced chemical equation is 4Al + 3O₂ → 2Al₂O₃.
20. What is the balanced chemical equation for the reaction of Ammonia (NH₃) with Oxygen (O₂)? Solution: The balanced chemical equation is 4NH₃ + 5O₂ → 4NO + 6H₂O.