Ag2S forms a black precipitate and CdS forms a dark yellow precipitate. A solution of CdS is prepared by dissolving 0.25 moles of solid CdS in distilled water. When equilibrium is established, a small amount of dark yellow solid remains on the bottom. A 0.25 mol if solid AgNO3 is then stirred into the beaker, and the dark yellow precipitate is replaced with a black precipitate. I. Did the following equilibrium shift after the AgNO3 was added? Explain using 2-3 sentences.

CdS (s) equilibrium arrows Cd 2+ (aq) + S 2- (aq)

II. Which compound has the larger Ksp value? Justify your answer.