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Question

A solution contains 1.8x 10^-4 M Ag^+ and 1.5x10^-3 M Pb^2+. If NaI is added, will AgI (Ksp = 8.3 x 10^-17) or PbI2 (Ksp = 7.9 x 10^-9) precipitate first? a) AgI will precipitate first. b) PbI2 will precipitate first.