A solution that is in and in is titrated dropwise with at

CHEMISTRY · Subjective · AP · Chemistry · Equilibrium · Equilibrium

Problem

A solution that is 0.020 M0.020\,\text{M} in Cl−\text{Cl}^- and 0.020 M0.020\,\text{M} in I−\text{I}^- is titrated dropwise with 0.020 M Pb(NO3)20.020\,\text{M}\ \text{Pb(NO}_3)_2 at 25∘C25^{\circ}\text{C}. The solubility products are Ksp(PbCl2)=1.6×10−5K_{sp}(\text{PbCl}_2)=1.6\times10^{-5} and Ksp(PbI2)=1.4×10−8K_{sp}(\text{PbI}_2)=1.4\times10^{-8}. Which lead halide precipitates first? Briefly justify your answer.

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