Analytical ChemistryHard
Question
Consider following reaction ; Nitrite + Acetic acid + Thiourea → N2↑ + SCN- + 2H2O. Formation of the product in the above reaction can be identified by :
Options
A.FeCl3 / dilute HCl, when blood red colour appears.
B.FeCl3 / dilute HCl, when blue colour appears.
C.K2Cr2O7 / HCl, when green colour appear.
D.KMnO4 / HCl, when colourless solution is formed.
Solution
Fe3+ + 3SCN- → Fe(SCN)3 (deep red colouration).
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