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Write the balanced oxidation and reduction half reactions for reaction of Fe(II) with permanganate in acidic...

Write the balanced oxidation and reduction half reactions for reaction of Fe(II) with permanganate in acidic solution.

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Answer #1

Fe2+(aq) + MnO4-(aq) ---> Fe3+(aq) + Mn2+(aq) (acidic solution)

to balance this...
1. Write the half reactions:

Fe2+(aq) ---> Fe3+(aq) (oxidation)

MnO4-(aq) ---> Mn2+(aq) (reduction)

2. Balance each half reaction:

Fe2+(aq) ---> Fe3+(aq) + e-

MnO4-(aq) + 8H+(aq) + 5e- ---> Mn2+(aq) + 4H2O

3. Combine the half reactions to give the overall reaction:
5Fe2+(aq) ---> 5Fe3+(aq) + 5e-
MnO4-(aq) + 8H+(aq) + 5e- ---> Mn2+(aq) + 4H2O
--------------------------------------...
5Fe2+(aq) + MnO4-(aq) + 8H+(aq) ---> 5Fe3+(aq) + Mn2+(aq) + 4H2O

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