Consider an Aqueous Solution Which Is 0

question 19

Multiple Choice

Consider an aqueous solution which is 0.020 M in Pb²⁺ and 0.20 M in Ag⁺.If concentrated aqueous potassium iodide solution (so that volume changes may be neglected) is added gradually with good stirring to this solution,which precipitate will form first?
K_sp for PbI₂ = 7.1 × 10^-9;for AgI = 8.31 × 10^-17

• A)PbI₂
• B)KI
• C)AgI
• D)PbI₂ and AgI precipitate together
• E)Ag₂[PbI₄]

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