Balancing Chemical Equations Quiz
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Questions and Answers

What is the correct balanced equation for the decomposition of silver oxide?

  • 2 Ag2O → 2 Ag + 2 O2
  • 2 Ag2O → 4 Ag + O2 (correct)
  • 2 Ag2O → 2 Ag + O2
  • 2 Ag2O → 4 Ag + 2 O2

    • Which of the following represents the correct coefficients for the combustion of sulfur in the presence of oxygen?

  • S8 + 12 O2 → 8 SO3 (correct)
  • S8 + 4 O2 → 8 SO3
  • 1 S8 + 8 O2 → 8 SO3
  • S8 + 8 O2 → 8 SO3

    • What are the coefficients for the reaction of glucose formation from carbon dioxide and water?

  • 6 CO2 + 6 H2O → C6H12O6 + 12 O2
  • 6 CO2 + 6 H2O → C6H12O6 + 6 O2 (correct)
  • 6 CO2 + 6 H2O → 1 C6H12O6 + 6 O2
  • 1 CO2 + 1 H2O → 1 C6H12O6 + 1 O2

    • What are the coefficients needed to balance the reaction between hydrochloric acid and calcium carbonate?

    <p>HCl + CaCO3 → CaCl2 + H2O + CO2</p> Signup and view all the answers

    Which of the following is the correct balanced equation for the reaction of sodium bromide with calcium fluoride?

    <p>NaBr + CaF2 → NaF + CaBr2</p> Signup and view all the answers

    Study Notes

    Balancing Chemical Equations

    • Equation 12: 2 Na + 2 H₂O → 2 NaOH + H₂ (Sodium reacts with water to produce sodium hydroxide and hydrogen gas)

    • Equation 13: 2 Ag₂O → 4 Ag + O₂ (Silver(I) oxide decomposes into silver and oxygen)

    • Equation 14: S₈ + 8 O₂ → 8 SO₃ (Sulphur reacts with oxygen to form sulphur trioxide)

    • Equation 15: 6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂ (Carbon dioxide and water react to produce glucose and oxygen. Photosynthesis)

    • Equation 16: 2 K + MgBr₂ → 2 KBr + Mg (Potassium displaces magnesium in magnesium bromide to form potassium bromide and magnesium)

    • Equation 17: 2 HCl + CaCO₃ → CaCl₂ + H₂O + CO₂ (Hydrochloric acid reacts with calcium carbonate to produce calcium chloride, water, and carbon dioxide)

    • Equation 18: HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂ (Nitric acid reacts with sodium bicarbonate to produce sodium nitrate, water, and carbon dioxide)

    • Equation 19: 2 H₂O + O₂ → 2 H₂O₂ (Water and oxygen react to create hydrogen peroxide)

    • Equation 20: NaBr + CaF₂ → NaF + CaBr₂ (Sodium bromide reacts with calcium fluoride to produce sodium fluoride and calcium bromide)

    • Equation 21: H₂SO₄ + 2 NaNO₂ → 2 HNO₂ + Na₂SO₄ (Sulfuric acid reacts with sodium nitrite to form nitrous acid and sodium sulfate)

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    Description

    Test your understanding of balancing chemical equations with this quiz! It includes various reaction types such as decomposition, displacement, and synthesis. Complete equations based on reactants and products to master the concepts.

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