What is the maximum concentration of iodide ions that will precipitate AgI but not PbI2 from a solution that is  M each in Ag+ and Pb2+? For AgI, Ksp = 1.5 × 10–16 and for PbI2, Ksp = 1.4 × 10–8. A) 2.8X10^-3 M B) 8.3X10^-14 M C) 7.8X10^-6 M D) 1.2X10^-8 M E) none of these; PbI2 will always precipitate before AgI.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section15.5: Factors Affecting Solubility
Problem 15.10CE: Consider 0.0010-M solutions of these sparingly soluble solutes in equilibrium with their ions....
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What is the maximum concentration of iodide ions that will precipitate AgI but not PbI2 from a solution that is  M each in Ag+ and Pb2+? For AgI, Ksp = 1.5 × 10–16 and for PbI2Ksp = 1.4 × 10–8.

A) 2.8X10^-3 M

B) 8.3X10^-14 M

C) 7.8X10^-6 M

D) 1.2X10^-8 M

E) none of these; PbI2 will always precipitate before AgI. 

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