suppose you wanted to remove the lead ions Pb2+ from drinking water without removing the calcium ions (Ca2+) which provided drinking water its distinctive taste. What is the maximuin amount of hydroxide you would add to precipitate out Pb2+ without removing Ca+2.  The Ksp for Ca(OH)2 and Pb(OH)2 are 5.5x10^-6 and 2x10^-15, respectively.

Chemistry: The Molecular Science
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ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
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suppose you wanted to remove the lead ions Pb2+ from drinking water without removing the calcium ions (Ca2+) which provided drinking water its distinctive taste.

What is the maximuin amount of hydroxide you would add to precipitate out Pb2+ without removing Ca+2. 

The Ksp for Ca(OH)2 and Pb(OH)2 are 5.5x10^-6 and 2x10^-15, respectively.

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