SAS 7 Gen Chem quiz

Identify the type of reaction for the following equation:

2H2 + O2-----2H2O

• Decomposition

• Synthesis

• Combustion

• Single Displacement

What type of reaction is represented by the following equation?

C3H8 + 5O2 → 3CO2 + 4H2O

• Decomposition

• Synthesis

• Combustion

• Single Displacement

 Which of the following represents a decomposition reaction?

• 2KClO3 → 2KCl + 3O2

• CH4 + 2O2 → CO_2 + 2H_2O

• Fe + CuSO4 → FeSO4 + Cu

• NaOH + HCl → NaCl + H2O

Which of the following is a single replacement reaction?

• 2Al + 3CuCl2 → 2AlCl3 + 3Cu

• NaOH + HCl → NaCl + H2O

• C6H12O6 + 6O2 → 6CO2 + 6H2O

• 2KClO3 → 2KCl + 3O2

 If you start with 4 moles of hydrogen and 2 moles of oxygen, how many moles of water will be produced in the following reaction?

2H2 + O2 → 2H2O

• 1 mole

• 2 moles

• 4 moles

• 6 moles

Balance the following equation:

H2 + O2 → H2O

• H2 + O2 → H2O

• H2 + 2O2 → 2H2O

• 2H2 + 2O2 → H2O

• 2H2 + O2 → 2H2O

Balance the following combustion reaction:

C3H8 + O2 → CO2 + H2O

• C3H8 + 5O2 → 2CO2 + 3H2O

• C3H8 + 4O2 → 3CO2 + 3H2O

• C3H8 + 5O2 → 3CO2 + 4H2O

• C3H8 + 3O2 → 3CO2 + 4H2O

 Balance the following equation:

NaOH + H2SO4 → Na2SO4 + H2O

• NaOH + H2SO4 → Na2SO4 + H2O

• 2NaOH + H2SO4 → Na2SO4 + 2H2O

• NaOH + 2H2SO4 → Na2SO4 + 2H2O

• 2NaOH + 2H2SO4 → Na2SO4 + H2O

 Balance the following equation:

Fe2O3 + CO → Fe + CO2

• Fe2O3 + 3CO → 2Fe + 3CO2

• 2Fe2O3 + 3CO → 4Fe + 3CO2

• 2Fe2O3 + CO → 2Fe + 3CO2

• Fe2O3 + 2CO → 2Fe + 3CO2

 Balance the following equation:

Zn + HCl → ZnCl2 + H2

• Zn + HCl → ZnCl2 + H2

• 2Zn + HCl → 2ZnCl2 + H2

• Zn + 2HCl → ZnCl2 + H2

• Zn + HCl → 2ZnCl2 + 2H2