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FrontierScience / 85b4f862-d881-4a79-8c5d-3e927b486b71 / A 0.225 g sample of partially oxidized iron (Fe and Fe2O3) is completely…

Problem

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problem

A 0.225 g sample of partially oxidized iron (Fe and Fe2O3) is completely dissolved in acid, and all the dissolved iron is reduced to Fe2+. The sample is then titrated with 0.02 M KMnO4. The volume of KMnO4 used to reach the equivalence point was 37.5 mL.

Calculate the composition of the sample, expressed as the percentage of Fe and the percentage of Fe2O3. Round each to two decimal places.

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subject

chemistry

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Source and history

upstream_id / Original problem ID: 85b4f862-d881-4a79-8c5d-3e927b486b71
task_id: 156accad-994f-53a8-a6d4-495e6a0da4d8
task_key: olympiad--test--85b4f862~2dd881~2d4a79~2d8c5d~2d3e927b486b71
task_revision_id: 1
config / split: olympiad / test

Official source

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