A 0.4679 g sample of iron-containing ore is dissolved in acid and the iron reduced to the +2 oxidati — Stoichiometry Chemistry Question
Question
A 0.4679 g sample of iron-containing ore is dissolved in acid and the iron reduced to the +2 oxidation state. The solution is titrated with 0.03930 M KMnO4, requiring 26.82 mL to reach the equivalence point. What is the percentage by mass of iron in the ore?
A.
12.58%
B.
29.43%
C.✓ Correct
62.91%
D.
72.36%
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