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Oxidation-Reduction Worksheet
For each reaction below, identify the atom oxidized, the atom reduced, the oxidizing agent, the reducing agent, the oxidation half reaction, the reduction half reaction, and then balance the equation by the method of oxidation-reduction showing all electrons transfers.  

1.Mg + HCl ( MgCl2 + H2

2.Fe + V2O3 ( Fe2O3 + VO

3.KMnO4 + KNO2 + H2SO4 ( MnSO4 + H2O + KNO3 + K2SO4

4.K2Cr2O7 + SnCl2 + HCl ( CrCl3 + SnCl4 + KCl + H2O

5.KMnO4 + NaCl + H2SO4 ( Cl2 + K2SO4 + MnSO4 + H2O + Na2SO4

6.K2Cr2O7 + H2O + S ( SO2 + KOH + Cr2O3

7.KClO3 + C12H22O11 ( KCl + H2O + CO2

8.H2C2O4 + K2MnO4 ( CO2 + K2O + Mn2O3 + H2O

9.Mn(NO3) 2 + NaBiO3 + HNO3 ( HMnO4 + Bi(NO3) 3 + NaNO3 + H2O

10.H2C2O4 + KMnO4 ( CO2 + K2O + Mn2O3 + H2O

 
 
 
 
 
 
Oxidation Reduction Worksheet Answers

 

1.  Mg0 + 2H+1 Cl-1 → Mg+1 Cl2-1 + H20
-2e- 2(+1e-)

2.  0         +3 -2           3 -2       +2 -2 2Fe +   3V2O3 → Fe2O3 + 6VO
2(-3e-)  3(+2e-)

3.+1+7 -2    +1+3-2        +1+6-2        +2+6 -2    +1 -2   +1+5-2      +1+6-2 2KMnO4+5KNO2 + 3H2SO4 → 2MnSO4+3H2O +5KNO3 + K2SO4
2(+5e-)      5(-2e-)

4.+1 +6 -2       +2-1           +1-1         +3-1        +4 -1       +1 -1    +1 -2 K2Cr2O7 +3SnCl2 + 14HCl → 2 CrCl3 + 3SnCl4 +2 KCl +7 H2O (+6e-)         3(-2e-)

5.+1 +7 -2          +1-1     +1+6-2            0      +1+6-2    +2+6-2       +1-2      +1+6 -2 2KMnO4+ 10NaCl +8H2SO4 → 5Cl2 + K2SO4 +2MnSO4 +8H2O+ 5Na2SO4 +5e-             5(-1e- )

6.  +1 +6 -2       +1 -2        0        4-2        +1-2+1    +3 -2 2K2Cr2O7 + 2H2O + 3S → 3SO2 + 4KOH + 2Cr2O3
2(+6e-)                      3(-4e-)

7. +1+5-2      0   +1    -2           +1-1         +1-2       +4 -2 8KClO3 + C12H22O11 → 8KCl + 11H2O + 12CO2
8(+6e-)         -48e-

8.+1 +3 -2       +1 +6   -2         +4 -2     +1 -2       +3 -2          +1-2 3H2C2O4 + 2K2MnO4 →...
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