A Mining Operation Needs to Separate Silver and Copper $\times$ 10^-2 M
B)1

A mining operation needs to separate silver and copper.You are to determine whether this separation can be accomplished by oxidizing the metals to Ag⁺ and Cu⁺,each one at a concentration of 0.15 M,and then precipitating one as the chloride salt without precipitate the other.What is the concentration of the Ag⁺ remaining in solution when CuCl begins to precipitate? (For AgCl,pK_sp = 9.74.and for CuCl,pK_sp = 6.76.)

A) 1.57 $\times$ 10^-2 M
B) 1.57 $\times$ 10^-4 M
C) 2.23 $\times$ 10^-2 M
D) 2.23 $\times$ 10^-4 M
E) 3.72 $\times$ 10^-3 M