Question

Silver nitrate (AgNO3) is slowly added to a solution containing 0.100 M Br-and 0.050 M FeCN64- until a precipitate just forms. What is the molar concentration of Ag+just as the precipitate forms? AgBr Ksp= 5.0 x10-13and Ag4FeCN6 Ksp= 8.5 x10-45.
A) 2.0 x10-11M Ag+
B) 5.0 x10-12M Ag+
C) 1.0 x10-11M Ag+
D) 3.3 x10-12M Ag+
E) 1.7 x10-43M Ag+

Answer

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