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chem lab

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KMn04 with iron(II) ammonium sulphate hexahydrate-redox titration.

1-what is the purpose of adding H2SO4 to iron sample before the titration?

2-why is there no indicator used to determine the end point for this titration?

3-suggest another possible oxidising agent and reducing agent can be used to replace potassium permanganate & iron (II) ammonium sulphate haxahydrate in this exp.

  • chem lab - ,

    H2SO4 is added to make sure the solution is acid. KMnO4 behaves differently in acid vs basic solutions.

    No separate indicator is needed since KMnO4 serves as its own indicator.

    #3 is confusing to me. I don't know what the question is asking.

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