Fe²⁺(aq)reacts with MnO₄^-(aq)ion in Acidic Solution to Yield Fe³⁺(aq)ions and Mn²⁺(aq)ions.5Fe²⁺(aq)

Multiple Choice

Fe²⁺(aq) reacts with MnO₄^-(aq) ion in acidic solution to yield Fe³⁺(aq) ions and Mn²⁺(aq) ions.5Fe²⁺(aq) + MnO₄^-(aq) + 8H⁺ $\rarr$ 5 Fe³⁺(aq) + Mn²⁺(aq) + 4H₂O Melanterite is a greenish mineral, and can be found on the walls of mines. A sample of melanterite, FeSO₄·7H₂O, was analyzed for purity using this reaction by titration of an aqueous solution of the sample. One such sample required 47.35 mL of 0.0175350 M permanganate solution to completely titrate all the iron in the sample by the reaction shown above. How much did the sample weigh, if it was in fact pure melanterite? Hint: Watch your units carefully at each step of the problem.

A) 0.596 g
B) 0.184 g
C) 0.461 g
D) 1.154 g
E) 4.87 g