28. Solving a chemistry problem

28. Solving a chemistry problem

3. A sample of magnetite with a mass fraction of iron of 72.36% equal to 1.0000 g, dissolved in acids. To what volume should the resulting solution be diluted so that the titration of iron ions reduced to Fe(II) from 50 ml of this solution requires 17 ml of a KMnO4 solution with a concentration of 0.1525 mol/l (f´eq = 1/5)?

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