A Solution Contains 0

Multiple Choice

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? K_sp(CuCl) = 1.0 × 10^-6,K_sp(CuI) = 5.1 × 10^-12.

A) 3.0 × 10^-10 mol L^-1,CuI
B) 3.0 × 10^-10 mol L^-1,CuCl
C) 4.8 × 10^-5 mol L^-1,CuCl
D) 4.8 × 10^-5 mol L^-1,CuI
E) 3.0 × 10^-5 mol L^-1,both CuCl and CuI are in the precipitate