An FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 550.mL of a solution that is 0.300 M in Cl^- ion? A) 0.943 mL B) 314 mL C) 943 mL D) It is not possible to make a more concentrated solution from a less concentrated solution.

Question

Quizplus · Accepted Answer

FeCl3 dissociates into Fe3+ and 3Cl-. To get 0.300 M Cl-, you need 0.100 M FeCl3 (since 0.100 M FeCl3 gives 0.300 M Cl-). Using the dilution equation M1V1 = M2V2, where M1 = 0.175 M, V1 = ?, M2 = 0.100 M, and V2 = 550 mL, solving for V1 gives 314 mL.

An FeCl3 Solution Is 0

An FeCl₃ Solution Is 0