A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analyzed by dissolving the sample and completely precipitating the Ca2+ as CaC2O4. The CaC2O4 was dissolved in sulfuric acid and the resulting H2C2O4 was titrated with a standard KMnO4 solution. The titration required 35.62 mL of 0.1092 M KMnO4. Calculate the number of moles of H2C2O4 that reacted with the KMnO4. Calculate the number of moles of CaCO3 in the original sample. Calculate the percentage by weight of CaCO3 in the original sample.

A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analysed by dissolving the sample and…

Answered: A 1.2516 gram sample of a mixture of…

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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A 1.2516 gram sample of a mixture of CaCO₃ and Na₂SO₄ was analyzed by dissolving the sample and completely precipitating the Ca²⁺ as CaC₂O₄. The CaC₂O₄ was dissolved in sulfuric acid and the resulting H₂C₂O₄was titrated with a standard KMnO₄solution. The titration required 35.62 mL of 0.1092 M KMnO_4.Calculate the number of moles of H₂C₂O₄that reacted with the KMnO₄. Calculate the number of moles of CaCO₃ in the original sample. Calculate the percentage by weight of CaCO₃ in the original sample.

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