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anonymous

  • 4 years ago

50g of steel wire was dissolved in excessive of diluted sulphuric acid and the solution was made up to 250ml in a standard flask. 25ml of this solution was pipetted into a conical flask and needed 25.45ml of 0.02M KMnO4 for complete oxidation. calculate the percentage of iron in the sample.

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  1. anonymous
    • 4 years ago
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    What is the molarity of the acid sol'n?

  2. JFraser
    • 4 years ago
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    We don't need to know the concentration of the orignal acid, since the volume and concentration used in the oxidation tells us moles of iron anyway.

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