0.804 g sample of iron ore was dissolved in acid

CHEMISTRY · Subjective · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

0.804 g sample of iron ore was dissolved in acid. Iron was oxidized to +2 state and it required 47.2 mL of 0.112 N

\text{KMnO}_4

solution for titration. Calculate % of Fe and

\text{Fe}_3\text{O}_4

in ore.