Problem: A solution contains 2.1×10−4 M  Ag+ and 1.6×10−3 M  Pb2 + .Specify the concentration of I- needed to begin precipitation.

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FREE Expert Solution

AgI (s) Ag+ (aq) + I- (aq)


Ksp =[Ag+][I-][I-] =Ksp[Ag+][I-] =8.51 × 10- 172.1×10-4 


[I-] = 4.0524x10-13 M


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Problem Details
A solution contains 2.1×10−4 M  Ag+ and 1.6×10−3 M  Pb2 + .


Specify the concentration of I- needed to begin precipitation.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Selective Precipitation concept. If you need more Selective Precipitation practice, you can also practice Selective Precipitation practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Dill's class at BU.