Solid PbI₂ has at 25 °C

CHEMISTRY · Subjective · AP · Chemistry · Equilibrium · Equilibrium

Problem

Solid PbI₂ has Ksp=7.1×10−9K_{sp}=7.1\times10^{-9} at 25 °C. Calculate the percentage by which the molar solubility of PbI₂ decreases when the salt is dissolved in 0.020 M KI instead of pure water. Report the percentage decrease to two significant figures.

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