Chemistry, stochiometry2

The no. Of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is.......

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asked by Aman
  1. Balance the equations:

    Oxidise Sulfite:
    _ SO3{2-} + _ H2O = _ SO4{2-} + _ H{+} + _ e{-}

    Reduce Permanganate in acid:
    _ KMnO4 + _ H{+} + _ e{-} = _ K{+} + _ Mn{2+} + _ H2O

    Combine the half equations:
    _ KMnO4 + _ H2SO3 = _ K2SO4 + _ MnSO4 + _ H2SO4 + _ H2O

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    posted by Graham
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