A solution is 0.10 M in Pb(NO3)2 and 0.10 M in AgNO3.  Solid NaI is added until the second solid compound is on the verge of precipitating.  Which compound precipitates first and what is the I- concentration when the second compound begins to precipitate? Ksp for AgI is 1.5 x 10-16         Ksp for PbI2 is 8.7 x 10-9 AgI , 2.9 × 10-4 M PbI 2 , 4.4 × 10-3 M AgI , 8.7 × 10-8 M AgI , 9.3 × 10-5 M PbI2, 5.9 x 10-4 M

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A solution is 0.10 M in Pb(NO3)2 and 0.10 M in AgNO3.  Solid NaI is added until the second solid compound is on the verge of precipitating.  Which compound precipitates first and what is the I- concentration when the second compound begins to precipitate?

Ksp for AgI is 1.5 x 10-16         Ksp for PbI2 is 8.7 x 10-9

AgI , 2.9 × 10-4 M
PbI 2 , 4.4 × 10-3 M
AgI , 8.7 × 10-8 M
AgI , 9.3 × 10-5 M
PbI2, 5.9 x 10-4 M
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