Problem: The concentration of iodide ions in a saturated solution of lead (II) iodide is __________ M. The solubility product constant of is Pbl2 is 1.4 x 10-8.A) 3.0 x 10-3B) 3.8 x 10-4C) 1.5 x 10-3D) 3.5 x 10-9E) 1.4 x 10-8

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For this problem, we have to solve for the concentration of iodide ions in a saturated solution of lead (II) iodide


Recall that Ksp is an equilibrium constant related to slightly soluble ionic compounds.


The dissociation of slightly soluble PbI2 in solution is as follows:

PbI2(s)  Pb2+(aq) + 2 I(aq)


We can construct an ICE table for this dissociation. Remember that solids are ignored in the ICE table and Ksp expression.



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Problem Details

The concentration of iodide ions in a saturated solution of lead (II) iodide is __________ M. The solubility product constant of is Pbl2 is 1.4 x 10-8.

A) 3.0 x 10-3

B) 3.8 x 10-4

C) 1.5 x 10-3

D) 3.5 x 10-9

E) 1.4 x 10-8

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