A Solution Contains 0

question 88

Multiple Choice

A solution contains 0.021 M Cl⁻ and 0.017 M I⁻.A solution containing copper(I) ions is added to selectively precipitate one of the ions.At what concentration of copper(I) ion will a precipitate begin to form? What is the identity of the precipitate? K_sp(CuCl) = 1.0 × 10^-6,K_sp(CuI) = 5.1 × 10^-12.

• A) 3.0 × 10^-10 M, CuI
• B) 3.0 × 10^-10 M, CuCl
• C) 4.8 × 10^-5 M, CuCl
• D) 4.8 × 10^-5 M, CuI
• E) No precipitate will form at any concentration of copper(I).

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