Problem: The concentration of Pb2+ in an aqueous solution is 5.5 x 10-3 M. What concentration of SO42- is required to begin precipitating PbSO4? The Ksp of PbSO4 is 2.5 x 10-8.(a) 1.4 x 10-10 M (b) 4.5 x 10-6 M (c) 1.6 x 10-4 M (d) 8.3 x 10-4 M (e) 2.9 x 10-2 M

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The concentration of Pb2+ in an aqueous solution is 5.5 x 10-3 M. What concentration of SO42- is required to begin precipitating PbSO4? The Ksp of PbSO4 is 2.5 x 10-8.

(a) 1.4 x 10-10

(b) 4.5 x 10-6

(c) 1.6 x 10-4

(d) 8.3 x 10-4

(e) 2.9 x 10-2 M

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