Silver ion is being considered for separating I- from SCN- in a solution that is 0.040 M in KI and 0.080 M in NaSCN.
(a) What Ag+ concentration is needed to lower the I- concentration to 1.0 × 10-6 M?
(b) What is the Ag+ concentration of the solution when AgSCN begins to precipitate?
(c) What is the ratio of SCN- to I- when AgSCN begins to precipitate?
(d) What is the ratio of SCN- to I- when the Ag+ concentration is 1.0 × 10-3 M?
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