A mixture containing Ca2+ and Pb2+ can be separated by selectively precipitating
ID: 522868 • Letter: A
Question
A mixture containing Ca2+ and Pb2+ can be separated by selectively precipitating one of the ions while the other remains in solutions. Which compound should be added for this separation?A) Sodium chloride B) Potassium nitrate C) Lithium acetate D) Ammonium nitrate
A mixture containing Ca2+ and Pb2+ can be separated by selectively precipitating one of the ions while the other remains in solutions. Which compound should be added for this separation?
A) Sodium chloride B) Potassium nitrate C) Lithium acetate D) Ammonium nitrate
A mixture containing Ca2+ and Pb2+ can be separated by selectively precipitating one of the ions while the other remains in solutions. Which compound should be added for this separation?
A) Sodium chloride B) Potassium nitrate C) Lithium acetate D) Ammonium nitrate
Explanation / Answer
To separate Ca2+ and Pb2+,
we would add,
A) sodium chloride
It forms more soluble CaCl2 and much lower soluble PbCl2 salts.
PbCl2 precipitates out and can be separated out easily.
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