QQuestion
Identify the cation in each of the following cases: [2]
(a) Ammonium hydroxide solution when added to Solution B gives a white precipitate which does not dissolve in excess of ammonium hydroxide solution.
(b) Sodium hydroxide solution when added to Solution C gives a white precipitate which is insoluble in excess of sodium hydroxide solution.
✓Answer
(a) Lead(II) ion, Pb2+.
(b) Calcium ion, Ca2+.
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