Question 22 A few drops of concentrated HNO3 is added to an unknown solution and
CHEMISTRY
JAMB 2011
Question 22 A few drops of concentrated HNO3 is added to an unknown solution and boiled for a while. If this produces a brown solution, the cation presents is likely to be
- A) Pb2+
- B) Cu3+
- C) Fe3+
- D) Fe2+
Correct Answer: D) Fe2+
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