An aqueous blue coloured solution of a trasition of metal sulphate rea – InterviewSolution

1.	An aqueous blue coloured solution of a trasition of metal sulphate reacts with H_(2)S in acidic medium to give a black precipitate A, which is insoluble in warm aqueous solution of KOH. The blue solution on treatment with KI in weakly acidic medium, turns yellow and produces a white precipitate B. Identify the transition metal ion. Write the chemical reaction involvedin the formation of A and B.
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