Problem 13-92

b. Since AgSCN(s) is insoluble, the addition of Ag⁺ to the solution will consume SCN^-(aq) therefore, the concentration of SCN^-(aq) will become smaller.
c. Same logic than "b" but this time with iron
d. Adding Fe(NO₃)₃(aq) is the same as adding Fe₃⁺(aq) since NO₃^- is a spectator ion.