Balancing Chemical Equations Worksheet
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Questions and Answers

What is the balanced chemical equation for the reaction between iron(II) sulfide and oxygen to form iron(III) oxide and sulfur dioxide?

  • $\textit{x}$ FeS2 + $\textit{y}$ O2 $\textit{a}$ Fe2O3 + $\textit{b}$ SO2 (correct)
  • $\textit{x}$ FeS2 + $\textit{y}$ O2 $\textit{a}$ Fe3O4 + $\textit{b}$ SO2
  • $\textit{x}$ FeS2 + $\textit{y}$ O2 $\textit{a}$ FeO + $\textit{b}$ SO2
  • $\textit{x}$ FeS + $\textit{y}$ O2 $\textit{a}$ Fe2O3 + $\textit{b}$ SO2
  • What is the balanced chemical equation for the reaction between carbon and sulfur dioxide to form carbon disulfide and carbon monoxide?

  • $\textit{x}$ C + $\textit{y}$ SO2 $\textit{a}$ C2S + $\textit{b}$ O2
  • $\textit{x}$ C + $\textit{y}$ SO2 $\textit{a}$ CS2 + $\textit{b}$ CO (correct)
  • $\textit{x}$ C + $\textit{y}$ SO2 $\textit{a}$ CO2 + $\textit{b}$ SO2
  • $\textit{x}$ C + $\textit{y}$ SO2 $\textit{a}$ CO + $\textit{b}$ S
  • What is the coefficient of water (H2O) in the balanced chemical equation for the reaction between phosphoric acid (H3PO4) and potassium hydroxide (KOH)?

  • 2
  • 1
  • 3 (correct)
  • 4
  • What is the coefficient of sodium oxide (Na2O) in the balanced chemical equation for the reaction between sodium (Na) and oxygen (O2)?

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    What is the coefficient of carbon disulfide (CS2) in the balanced chemical equation for the reaction between carbon (C) and sulfur dioxide (SO2)?

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    Study Notes

    Balancing Equations

    Reaction 1: Phosphoric Acid and Potassium Hydroxide

    • H3PO4 reacts with KOH to form K3PO4 and H2O

    Reaction 2: Potassium and Boron Trioxide

    • K reacts with B2O3 to form K2O and B

    Reaction 3: Hydrochloric Acid and Sodium Hydroxide

    • HCl reacts with NaOH to form NaCl and H2O

    Reaction 4: Sodium and Sodium Nitrate

    • Na reacts with NaNO3 to form Na2O and N2

    Reaction 5: Carbon and Sulfur

    • C reacts with S8 to form CS2

    Reaction 6: Sodium and Oxygen

    • Na reacts with O2 to form Na2O

    Reaction 7: Nitrogen and Oxygen

    • N2 reacts with O2 to form N2O5

    Reaction 8: Phosphoric Acid and Magnesium Hydroxide

    • H3PO4 reacts with Mg(OH)2 to form Mg3(PO4)2 and H2O

    Reaction 9: Sodium Hydroxide and Carbonic Acid

    • NaOH reacts with H2CO3 to form Na2CO3 and H2O

    Reaction 10: Potassium Hydroxide and Hydrobromic Acid

    • KOH reacts with HBr to form KBr and H2O

    Reaction 11: Sodium and Oxygen

    • Na reacts with O2 to form Na2O

    Reaction 12: Aluminum Hydroxide and Carbonic Acid

    • Al(OH)3 reacts with H2CO3 to form Al2(CO3)3 and H2O

    Reaction 13: Aluminum and Sulfur

    • Al reacts with S8 to form Al2S3

    Reaction 14: Caesium and Nitrogen

    • Cs reacts with N2 to form Cs3N

    Reaction 15: Magnesium and Chlorine

    • Mg reacts with Cl2 to form MgCl2

    Reaction 16: Rubidium and Rubidium Nitrate

    • Rb reacts with RbNO3 to form Rb2O and N2

    Reaction 17: Benzene and Oxygen

    • C6H6 reacts with O2 to form CO2 and H2O

    Reaction 18: Nitrogen and Hydrogen

    • N2 reacts with H2 to form NH3

    Reaction 19: Decane and Oxygen

    • C10H22 reacts with O2 to form CO2 and H2O

    Reaction 20: Aluminum Hydroxide and Hydrobromic Acid

    • Al(OH)3 reacts with HBr to form AlBr3 and H2O

    Reaction 21: Propane and Oxygen

    • CH3CH2CH2CH3 reacts with O2 to form CO2 and H2O

    Reaction 22: Propane and Oxygen

    • C3H8 reacts with O2 to form CO2 and H2O

    Reaction 23: Lithium and Aluminum Chloride

    • Li reacts with AlCl3 to form LiCl and Al

    Reaction 24: Ethane and Oxygen

    • C2H6 reacts with O2 to form CO2 and H2O

    Reaction 25: Ammonium Hydroxide and Phosphoric Acid

    • NH4OH reacts with H3PO4 to form (NH4)3PO4 and H2O

    Reaction 26: Rubidium and Phosphorus

    • Rb reacts with P to form Rb3P

    Reaction 27: Methane and Oxygen

    • CH4 reacts with O2 to form CO2 and H2O

    Reaction 28: Aluminum Hydroxide and Sulfuric Acid

    • Al(OH)3 reacts with H2SO4 to form Al2(SO4)3 and H2O

    Reaction 29: Sodium and Chlorine

    • Na reacts with Cl2 to form NaCl

    Reaction 30: Rubidium and Sulfur

    • Rb reacts with S8 to form Rb2S

    Reaction 31: Phosphoric Acid and Calcium Hydroxide

    • H3PO4 reacts with Ca(OH)2 to form Ca3(PO4)2 and H2O

    Reaction 32: Ammonia and Hydrochloric Acid

    • NH3 reacts with HCl to form NH4Cl

    Reaction 33: Lithium and Water

    • Li reacts with H2O to form LiOH and H2

    Reaction 34: Calcium Phosphate, Silicon Dioxide, and Carbon

    • Ca3(PO4)2 reacts with SiO2 and C to form CaSiO3, CO, and P

    Reaction 35: Ammonia and Oxygen

    • NH3 reacts with O2 to form N2

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    Description

    Test your knowledge of balancing chemical equations with this worksheet, which includes a variety of chemical reactions to balance. Practice balancing the given equations by determining the correct coefficients for each compound.

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