Balancing Chemical Equations Quiz – Questions and Answers   Recently updated !


Balancing Chemical Equations Quiz
Take a balancing chemical equations quiz to gain confidence in chemistry.

Here is a ten-question balancing chemical equations quiz. Each question presents an unbalanced equation. Select the balanced equation. Find the answer key below the questions. Remember, the number of each type of atoms is the same on both sides of the reaction arrow when an equation is balanced.

Balancing Chemical Equations Quiz Questions

(1) __ Na₃PO₄ + __ HCl → __ NaCl + __ H₃PO₄

  • Na₃PO₄ + HCl → NaCl + H₃PO₄
  • Na₃PO₄ +3 HCl → 3 NaCl + H₃PO₄
  • 3 Na₃PO₄ + HCl → 3 NaCl + H₃PO₄
  • Na₃PO₄ + 3 HCl → NaCl + H₃PO₄

(2) __ TiCl₄ + __ H₂O → __ TiO₂ + __ HCl

  • TiCl₄ + 2 H₂O → TiO₂ + 2 HCl
  • TiCl₄ + 2 H₂O → TiO₂ + 4 HCl
  • 2 TiCl₄ + H₂O → 2 TiO₂ + HCl
  • TiCl₄ + 4 H₂O → TiO₂ + 4 HCl

(3) __ C₂H₆O + __ O₂ → __ CO₂ + __ H₂O

  • 2 C₂H₆O + O₂ → CO₂ + 3 H₂O
  • C₂H₆O + 3 O₂ → 2 CO₂ + 3 H₂O
  • C₂H₆O + 2 O₂ → 3 CO₂ + 3 H₂O
  • 2 C₂H₆O + O₂ → 2 CO₂ + H₂O

(4) __ FeS + __ O₂ → __ Fe₂O₃ + __ SO₂

  • 2 FeS + O₂ → 2 Fe₂O₃ + 2 SO₂
  • FeS + O₂ → Fe₂O₃ + SO₂
  • 3 FeS + 2 O₂ → 3 Fe₂O₃ + 2 SO₂
  • 4 FeS + 7 O₂ → 2 Fe₂O₃ + 4 SO₂

(5) __ CaCl₂ + __ Na₃PO₄ → __ Ca₃(PO₄)₂ + __ NaCl

  • 2 CaCl₂ + 2 Na₃PO₄ → 2 Ca₃(PO₄)₂ + NaCl
  • CaCl₂ + Na₃PO₄ → Ca₃(PO₄)₂ + NaCl
  • 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl
  • 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 3 NaCl

(6) __ KOH + __ H₃PO₄ → __ K₃PO₄ + __ H₂O

  • 3 KOH + 2 H₃PO₄ → 3 K₃PO₄ + 3 H₂O
  • KOH + H₃PO₄ → K₃PO₄ + 6 H₂O
  • 3 KOH + H₃PO₄ → K₃PO₄ + 3 H₂O
  • 2 KOH + H₃PO₄ → K₃PO₄ + H₂O

(7) __ AgI + __ Na₂S → __ Ag₂S + __ NaI

  • AgI + Na₂S → Ag₂S + 2 NaI
  • 2 AgI + 2 Na₂S → 2 Ag₂S + 2 NaI
  • 2 AgI + 2 Na₂S → Ag₂S + 2 NaI
  • 2 AgI + Na₂S → Ag₂S + 2 NaI

(8) __ Ba₃N₂ + __ H₂O → __ Ba(OH)₂ + __ NH₃

  • 2 Ba₃N₂ + 3 H₂O → 2 Ba(OH)₂ + 2 NH₃
  • Ba₃N₂ + 6 H₂O → 3 Ba(OH)₂ + 2 NH₃
  • Ba₃N₂ + 3 H₂O → 3 Ba(OH)₂ + 2 NH₃
  • Ba₃N₂ + H₂O → Ba(OH)₂ + NH₃

(9) ___ SnO₂ + ___ H₂ → ___ Sn + ___ H₂O

  • 2 SnO₂ + 2 H₂ → 2 Sn + H₂O
  • SnO₂ + 2 H₂ → Sn + 2 H₂O
  • SnO₂ + H₂ → Sn + 2 H₂O
  • 2 SnO₂ + H₂ → 2Sn + H₂O

(10) __ KNO₃ + __ H₂CO₃ → __ K₂CO₃ + __ HNO₃

  • 2 KNO₃ + H₂CO₃ → K₂CO₃ + 2 HNO₃
  • 2 KNO₃ + 2 H₂CO₃ → K₂CO₃ + 2 HNO₃
  • KNO₃ + H₂CO₃ → K₂CO₃ + HNO₃
  • 2 KNO₃ + 2 H₂CO₃ → K₂CO₃ + 3 HNO₃

Balancing Chemical Equations Quiz Answers

  1. Na₃PO₄ +3 HCl → 3 NaCl + H₃PO₄
  2. TiCl₄ + 2 H₂O → TiO₂ + 4 HCl
  3. C₂H₆O + 3 O₂ → 2 CO₂ + 3 H₂O
  4. 4 FeS + 7 O₂ → 2 Fe₂O₃ + 4 SO₂
  5. 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl
  6. 3 KOH + H₃PO₄ → K₃PO₄ + 3 H₂O
  7. 2 AgI + Na₂S → Ag₂S + 2 NaI
  8. Ba₃N₂ + 6 H₂O → 3 Ba(OH)₂ + 2 NH₃
  9. SnO₂ + 2 H₂ → Sn + 2 H₂O
  10. 2 KNO₃ + H₂CO₃ → K₂CO₃ + 2 HNO₃

Learn More About Balancing Equations

If you had trouble with this quiz, it’s a good idea to review the steps of balancing chemical equations.