In which of the following cases will a violet colouration be observed? – InterviewSolution

1.	In which of the following cases will a violet colouration be observed?
Answer» An alkaline solution of sodiumnitroprusside is treated with a solution of `Na_(2)S` a solution of sodiumnitroprusside in aq.NaOH is treated with `Na_(2)SO_(3)` a solution of cobalt NITRITE treated with KCI. a solution of `Mn(NO_(3))_(2)` is treated with sodium bismuthate (or) red LEAD in presence of conc. `HNO_(3)` Solution :`Mn(HO_(3))_(2)+6HNO_(3)+5NaBiO_(3) to Na_(4)[FE(CN)_(5)NOS]` (violet colour)

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