The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 1.674-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 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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Answered: (a) Determine the %w/w Fe2O3 (MW =…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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The amount of iron in a meteorite is determined by a redox titration using KMnO₄ as the titrant. A 1.674-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 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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