Question

A solution of potassium permaganate is standardized with iron metal, a primary standard.

A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated withpermanganate.

5Fe^2+(aq)+MnO4^-(aq)+ 8H+(aq)—-> 5 Fe^3+(aq) + Mn^2+ +4H2O (l)

33.17 ml of permanganate is required to titrate a 0.5497-g sample of iron. Calculate the molariity of the potassium permanganate solution.

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