MGCCC, Perk Learning Lab

BALANCING EQUATIONS BY INSPECTION

1. Al + Fe₃O₄ Al₂O₃ + Fe

3. CH₃OH + O₂ CO₂ + H₂O

4. P₄O₁₀ + H₂O H₃PO₄

5. PCl₅ + H₂O H₃PO₄ + HCl

6. SbCl₅ + H₂O SbOCl₃ + HCl

7. MgO + Si Mg + SiO₂

8. CaCl₂ + Na₂CO₃ CaCo₃ + NaCl

9. C₆H₆ + O₂ CO₂ + H₂O

10. Al₂S₃ + H₂O Al(OH)₃ + H₂S

11. C₂H₆ + O₂ CO₂ + H₂O

12. KClO₃ KCl + KClO₄

13. KBr + Cl KCl + Br₂

14. (NH₄)₂SO₄ + NaOH NH₃ + H₂O + Na₂SO₄

15. Calcium Phosphate reacts with Sulfuric Acid to give Phosphic acid and Calcium Sulfate as a solid. Writ the balanced equation for this reaction.

ANSWERS

1.

2.

2. 8Al + 3Fe₃O₄ 4Al₂O₃ + 9Fe

3. 2CH₃OH + 3O₂ 2CO₂ + 4H₂O

Or CH₃OH + 1 ½ O₂ à CO₂ + 2H₂O

3. P₄O₁₀ + 6H₂O 4H₃PO₄

4. PCl₅ + 4H₂O H₃PO₄ + 5HCl

5. SbCl₅ + H₂O SbOCl₃ + 2HCl

6. 2MgO + Si 2Mg + SiO₂

7. CaCl₂ + Na₂CO₃ CaCo₃ + 2NaCl

8. 2C₆H₆ + 15O₂ 12CO₂ + 6H₂O

Or C₆H₆ + 7 ½ O₂ à 6CO₂ + 3H₂O

9. Al₂S₃ + 6 H₂O 2Al(OH)₃ + 3H₂S

10. 2C₂H₆ + 7O₂ 4CO₂ + 6H₂O

Or C₂H₆ + 3 ½ O₂ à 2 CO₂ + 3H₂O

11. 4KClO₃ KCl + 3KClO₄

12. 2KBr + 2Cl 2KCl + Br₂

13. (NH₄)₂SO₄ + 2NaOH 2NH₃ + 2H₂O + Na₂SO₄

14. Ca₃(PO₄)₂ + 3H₂SO₄ à 3CaSO₄ + 2H₃PO₄