Potassium permanganate, KMnO4, is standardized using high-quality sodium oxalate, Na2C2O4, in accordance to the reaction: 2 MnO4 + 16 H +5 C2042 → 2 Mn2+ +8 H2O + 10 CO2. A standard solution was prepared by dissolving 0.3562 g Na2C2O4 in water inside a volumetric flask. The mixture was diluted up to the 250.0-mL fiduciary mark. A 10.00 mL aliquot of the standard was analyzed and required 48.36 mL of KMnO4 to reach the colorless-to-pink end point. In correct significant figures, the molarity of KMnO4 is [NOTE: Just write the number. If your answer is 1.2345 x 10-67, use the format: 1.2345 x 10E-67. There is a space before and after the x.]

Potassium permanganate, KMnO4, is standardized using high-quality sodium oxalate, Na2C2O4, in accordance to the reaction: 2 MnO4 + 16 H +5 C2042 → 2 Mn2+ +8 H2O + 10 CO2. A standard solution was prepared by dissolving 0.3562 g Na2C2O4 in water inside a volumetric flask. The mixture was diluted up to the 250.0-mL fiduciary mark. A 10.00 mL aliquot of the standard was analyzed and required 48.36 mL of KMnO4 to reach the colorless-to-pink end point. In correct significant figures, the molarity of KMnO4 is [NOTE: Just write the number. If your answer is 1.2345 x 10-67, use the format: 1.2345 x 10E-67. There is a space before and after the x.]

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter19: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 11E: Iron (II) can be oxidized to iron (III) by dichromate ion, which is reduced to chromium (III) in...

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