Analytical ChemistryHard
Question
Which of the following is correct ?
Options
A.AgCl(s) + Na3 AsO3 → colourless solution
B.FeCl3(aq) + K4 Fe(CN)6 → brown precipitate.
C.FeCl3(aq) + K3Fe(CN)6 → brown colouration.
D.CuSO4(aq) + KCN (excess) → blue colouration.
Solution
Fe3+ + [Fe(CN)6]3- → Fe[Fe(CN)6] (brown colouration).
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