p-Block elementsHard
Question
The reaction between ferric salt and aqueous sodium thiosulphate produces pink colour which soon diminishes. The pink colour is due to the formation of :
Options
A.[Fe(S2O3)3]4-
B.[Fe(S2O3)2]-
C.Fe2(S4O6)3
D.none of these
Solution
Fe3+ + 2S2O32- → [Fe(S2O3)2]- pink or violet complex.
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