why thioglycolic acid is used in limit test of iron
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Answered by
13
Answer:
citric acid helps precipitation of iron with ammonnia by forming a complex with it....the thioglycolic acid helps oxidise iron 2 to iron 3.
Answered by
7
Answer:
The limit test for iron is based on the reaction of iron in ammonical solution in the presence of citric acid with thioglycolic acid.
Explanation:
When a pale pink to deep reddish purple colour is formed due to the ferrous thioglycote complex. ... The iron free citric acid is used to complex metal cations other than iron if any.
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