Use the equation showing the dissociation of iron thiocyanate in water to answer the question. FeSCN (aq) ⇄ Fe (aq) SCN (aq) in solution, FeSCN ions are red, Fe ions are pale yellow, and scn ions are colorless. when a solution at equilibrium is orange, which change would cause the solution to become pale yellow? (1 point)
a. adding an ion that causes fe to precipitate
b. adding an ion that causes scn to precipitate
c. adding kscn, which dissociates into k and scn
d. adding fecl, which dissociates into fe and cl