Oxidation Reduction Reactions Worksheet

 

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  1. What is an oxidation-reduction (or redox) reaction?

    2.  

     

  2. What do the following terms mean?
    • Oxidation
    • Reduction
    • What is a helpful way to remember this?

     

     

  3. What is an oxidation number?

    4.  

     

  4. Assign the oxidation number for the following
    • KMnO4
    • (NH4)2HPO4
    • Fe3O4
    • XeOF4

     

     

  5. What are the practical applications of oxidation numbers?

    6.  

     

  6. Consider:

    CH4 (g)     + 2O2 (g) → CO2 (g) + 2H2O (g)

    Determine what was oxidized and what was reduced.

    7.  

     

  7. What is an
    • Oxidizing agent?
    • Reducing agent?

     

     

  8. Consider:

    2CuCl (aq)    → CuCl2 (aq) +Cu (s)


    determine the following:
    • What was oxidized?
    • What was reduced?
    • What was the reducing agent?
    • What was the oxidizing agent?

     

     

  9. Consider:

    Zn(s) + 2HCl(aq)    → ZnCl2 (aq) + H2 (g)

    • What was oxidized?
    • What was reduced?
    • What was the reducing agent?
    • What was the oxidizing agent?

     

     

  10. What are the steps to balancing a redox reaction using the ½ reaction method?

    11.  

     

  11. Balance the following redox reaction using the ½ reaction method under both acidic and basic conditions.

    MnO4 (aq) + H2C­2O4 (aq)­     → Mn2+(aq) + CO2 (g)

    12.  

     

  12. A 45.20 mL sample of sol’n containing Fe2+ ions is titrated with a 0.225M KMnO4 sol’n.  It required 23.51 mL of KMnO4 sol’n to oxidize all the Fe2+ ions to Fe3+ by the following reaction

    MnO4- (aq) + Fe2+(aq)     → Mn2+(aq) + Fe3+(aq)   

    What was the concentration of Fe2+ in the sol’n?

 

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