A 1.000-g sample containing KHC2O4, H2C2O4, and impurities required 38.22 mL of 0.1000 M NaOH for acid-base titration. Another 1.000-g sample required 27.02 mLof 0.04000 M KMnO4 for redox titration in acid solution, according to the following reaction: MnO4- + 5C2O42- + 16H+ ⇄ 2Mn2+ + 10CO2 + 8H2OHow many mmols of KHC2O4 are there in the sample?

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Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 101QRT

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A 1.000-g sample containing KHC₂O₄, H₂C₂O₄, and impurities required 38.22 mL of 0.1000 M NaOH for acid-base titration. Another 1.000-g sample required 27.02 mLof 0.04000 M KMnO₄ for redox titration in acid solution, according to the following reaction:

MnO₄^- + 5C₂O₄^2- + 16H⁺ ⇄ 2Mn²⁺ + 10CO₂ + 8H₂O

How many mmols of KHC₂O₄ are there in the sample?

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