The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 2.1800 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 22.0 mL to reach the end point. Determine the %w/w Fe2O3 in the sample of meteorite.

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Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter19: Transitition Metals, Coordination Chemistry And Metallurgy

Section: Chapter Questions

Problem 19.65QE

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The amount of iron in a meteorite is determined by a redox titration using KMnO₄ as the titrant. A 2.1800 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 22.0 mL to reach the end point. Determine the %w/w Fe₂O₃ in the sample of meteorite.

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