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Manganese is derived from pyrolusite ore, an impure manganese dioxide. In the procedure used to analyze a pyrolusite ore for its MnO2 content, a 0.533 g sample is treated with 1.651 g oxalic acid (H;C;O4•2 H¿O) in an acidic medium. Following this reaction, the excess oxalic acid is titrated with 0.1000 M KMNO, 30.06 mL being required. What is the mass percent MnO2 in the ore? H;C¿O4 + MnO2 + H* Mn2+ + H;0 + CO: (not balanced) H;C,O, + MnO, +H* Mn + H;O + CO; (not balanced)

Manganese is derived from pyrolusite ore, an impure manganese dioxide. In the procedure used to analyze a pyrolusite ore for its MnO2 content, a 0.533 g sample is treated with 1.651 g oxalic acid (H;C;O4•2 H¿O) in an acidic medium. Following this reaction, the excess oxalic acid is titrated with 0.1000 M KMNO, 30.06 mL being required. What is the mass percent MnO2 in the ore? H;C¿O4 + MnO2 + H* Mn2+ + H;0 + CO: (not balanced) H;C,O, + MnO, +H* Mn + H;O + CO; (not balanced)

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 2.1ACP: Excess KI is added to a 100.0-mL sample of a soft drink that had been contaminated with bleach,...
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95. Manganese is derived from pyrolusite ore, an impure manganese dioxide. In the procedure used to analyze a pyrolusite ore for its MnO2 content, a 0.533 g sample is treated with 1.651 g oxalic acid (H;CO, 2 H2O) in an acidic medium. Following this reaction, the excess oxalic acid is titrated with 0.1000 M KMNO, 30.06 mL being required. What is the mass percent MnO2 in the ore? H;C;O4 + MnO2 + H* → Mn2+ + H;0 + CO; (not balanced) H;C,O, + MnO, +H* • - Mn* + H20 + CO2 (not balanced)
Transcribed Image Text:95. Manganese is derived from pyrolusite ore, an impure manganese dioxide. In the procedure used to analyze a pyrolusite ore for its MnO2 content, a 0.533 g sample is treated with 1.651 g oxalic acid (H;CO, 2 H2O) in an acidic medium. Following this reaction, the excess oxalic acid is titrated with 0.1000 M KMNO, 30.06 mL being required. What is the mass percent MnO2 in the ore? H;C;O4 + MnO2 + H* → Mn2+ + H;0 + CO; (not balanced) H;C,O, + MnO, +H* • - Mn* + H20 + CO2 (not balanced)
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