Silver ion is being considered as a reagent for separating I from SCN in a solution that is 0.060 M KI and 0.070 M in NaSCN. Given that the Ksps are 8.3 x 10-17 for Agl and 1.1 x 10-12 for AgSCN, answer the following. a) What Ag" concentration is needed to reduce the I concentration to 6.0 x 10° M (i.e., remove 99.99% from solution)? p) What is the Ag* concentration when AgSCN begins to precipitate? =) What is the ratio of [SCN ] to [I] when the AgSCN begins to precipitate? 1) Can Ag* effectively be used to separate I and SCN from solution? (Yes or no?) Explain your choice

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