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Consider the following equilibria for lead. Calculate the total concentration of lead for a system containing a fixed concentration (0.01 M) of KI. Note (s) denotes solid and (aq) denotes aqueous. Equation ?2 is not the reverse of the Ksp. PbI2 (s) ? Pb2+(aq) + 2I- (aq) - Ksp = 7.9 x 10-9 Pb2+ (aq) + I- (aq) ? PbI+ (aq) K1 = 1.0 x 102 Pb2+ + 2I- ? PbI2 (aq) ?2 = 1.4 x 103

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