A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 650.mL of a solution that is 0.300 M in Cl^- ion? A) 1.11 mL B) 371 mL C) 1110 mL D) It is not possible to make a more concentrated solution from a less concentrated solution.

Question

Quizplus · Accepted Answer

We can use the dilution equation: 
M1V1 = M2V2
where:
M1 = initial concentration of FeCl3 solution
V1 = volume of FeCl3 solution needed
M2 = final concentration of Cl- ion solution
V2 = final volume of Cl- ion solution

Plug in the values:
M1 = 0.175 M 
M2 = 0.300 M 
V2 = 650 mL

Solve for V1:
(0.175 M)(V1) = (0.300 M)(650 mL) 
V1 = 371 mL

Therefore, we need 371 mL of the FeCl3 solution to make 650 mL of a 0.300 M Cl- ion solution. The answer is choice B.

A FeCl3 Solution Is 0

A FeCl₃ Solution Is 0