A solution contains 0.021 mol L-1 Cl⁻ and 0.017 mol L-1 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? Ksp(CuCl) = 1.0 × 10-6, Ksp(CuI) = 5.1 × 10-12.
◦ 3.0 × 10-5 mol L-1, both CuCl and CuI are in the precipitate
◦ 4.8 × 10-5 mol L-1, CuCl
◦ 3.0 × 10-10 mol L-1, CuCl
◦ 4.8 × 10-5 mol L-1, CuI
◦ 3.0 × 10-10 mol L-1, CuI