Question

Which of the following is/are correct for potassium ferrocyanide?

• A. It gives a brown precipitate with $C{u}^{2+}$ ions
• B. It gives a red precipitate of mixed salt with $C{d}^{2+}$ ions
• C. It in excess gives a white precipitate with $Z{n}^{2+}$
• D. It develops a deep red coloration with $F{e}^{3+}$

Answer 1

Answer: (A), (C)

It gives a brown precipitate with $C{u}^{2+}$ ions
It in excess gives a white precipitate with $Z{n}^{2+}$

Option (A),(C) are correct.
(B) : It gives a yellow precipitate of mixed salt with $C{d}^{2+}$ ions.
(D) : It gives a prussian blue precipitate of mixed salt with $F{e}^{3+}$ ions.