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Mixture of iron and other substances

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Assume that the iron in iron ore (a mixture of iron and other substances) is in the form of Fe3+. The iron content of iron ore can be determined by dissolving the iron ore in HCl. The dissolved Fe3+ (aq) from the iron ore is then reduced to Fe2+

e- + Fe3+ → Fe2+

This solution is then titrated with KMnO4 (aq).

8 H+ (aq) + 5 Fe2+ (aq) + MnO4- (aq) → Mn2+ (aq) + 5 Fe3+ (aq) + 4 H2O (l)

Suppose a 0.6128 g sample of iron ore is dissolved in HCl (aq), reduced, and titrated with   41.95 mL of 0.0205 M KMnO4 (aq). What is the mass percent of iron in the iron ore sample?

Reference no: EM131937207

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