The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 0.4185-g sample is dissolved in acid and the liberated Fe3+ quantitatively reduced to Fe2+ using a Walden reductor. Titrating with 0.02500 M KMnO4 requires 41.27 mL to reach the end point.(a) Determine the %w/w Fe2O3 (MW = 159.69 g/mol) in the sample of meteorite.(b) Determine the %w/w Fe3O4 (MW = 231.533 g/mol) in the sample of meteorite.

The ratio of mass of solute to the mass of solution multiply by 100 is known as %w/w.

Answered: The amount of iron in a meteorite is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The amount of iron in a meteorite is determined by a redox titration using KMnO₄ as the titrant. A 0.4185-g sample is dissolved in acid and the liberated Fe³⁺ quantitatively reduced to Fe²⁺ using a Walden reductor. Titrating with 0.02500 M KMnO₄ requires 41.27 mL to reach the end point.
(a) Determine the %w/w Fe₂O₃ (MW = 159.69 g/mol) in the sample of meteorite.
(b) Determine the %w/w Fe₃O₄ (MW = 231.533 g/mol) in the sample of meteorite.

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