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Hydroxylamine reduced iron (+3) according to eq. 2NH_2OH + 4Fe^(+ + +) toN_2O(g) + H_2O + 4Fe^(+ +)+ 4H^(+). Iron (+2) thus produced is estimated by titration with a standard solution of permagnate. The reaction is MnO_4^(–) + 5Fe^(+ +) + 8H^(+)toMn^(2+)+ 5Fe^(+ + + )+ 4H_2O. A 10 ml solution of hydroxylamine solution was diluted to 1 litre 50 ml of this solution was boiled with an excess of iron (+3) solution. The resulting solution required 10 ml of 0.02 M KMnO_4 solution for complete oxidation or iron (+2). Calculate the weight of hydroxylamine in one litre of the original solution. |
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