The iron content of a mineral deposit was determined by titration with KMNO4 to see if it had enough iron for processing. A sample of iron ore with a mass of 2.126 g was dissolved with HCI and then treated with a reducing agent to convert any Fe3 in the ore to Fe2. Titration with 0.0565 M KMNO4 solution according to the equation 8H (aq) + MnO. (aq) + 5FE2 (aq) → 5FE3 (aq) + Mn2 (aq) + 4H:O(1) required 27.25 mL of the titrant to reach the endpoint where the purple MnO. ion was no longer being consumed. The molar mass of Fe is 55.85 g/mol. Determine the mass percent iron in the mineral deposit.

The iron content of a mineral deposit was determined by titration with KMNO4 to see if it had enough iron for processing. A sample of iron ore with a mass of 2.126 g was dissolved with HCI and then treated with a reducing agent to convert any Fe3 in the ore to Fe2. Titration with 0.0565 M KMNO4 solution according to the equation 8H (aq) + MnO. (aq) + 5FE2 (aq) → 5FE3 (aq) + Mn2 (aq) + 4H:O(1) required 27.25 mL of the titrant to reach the endpoint where the purple MnO. ion was no longer being consumed. The molar mass of Fe is 55.85 g/mol. Determine the mass percent iron in the mineral deposit.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 40P

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