Answer
See explanation below.
Work Step by Step
The iron content is analyzed by first reducing the Fe3+ to Fe2+ and then titrating with MnO4- in acidic solution. The balanced reaction of the titration step is:
5 Fe2+ (aq) + MnO4-(aq) + 8 H+ (aq) → Mn2+(aq) + 5 Fe3+(aq) + 4 H2O(l)
