How many mL of a 0.350 M AlI₃ solution are needed to make 700.mL of a solution that is 0.350 M in I^- ion? A)500 mL B)167 mL C)125 mL D)It is not possible to make a more concentrated solution from a less concentrated solution.

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Quizplus · Accepted Answer

AlI3 dissociates into Al3+ and 3 I- ions. To get 0.350 M I- ions, you need 1/3 of the concentration of AlI3, so 700 mL * (1/3) = 233.33 mL of 0.350 M AlI3. However, since the solution is already 0.350 M in I-, you need 167 mL of AlI3 to achieve this concentration.

How Many ML of a 0