A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make
450) mL of a solution that is 0.300 M in Cl^- ion?

Question

A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 450)mL of a solution that is 0.300 M in Cl^- ion?

Quizplus · Accepted Answer

We can use the formula: M1V1 = M2V2 where M1 = initial concentration of FeCl₃ V1 = volume of initial solution we need to measure M2 = final concentration of Cl^- ion V2 = final volume of the solution we want to make Substituting the given values, we get: 0.175 V1 = 0.300 x 450 V1 = 0.300 x 450 / 0.175 V1 = 771.43 mL However, we need only the volume of the initial solution we need to measure, which is V1. Therefore, the answer is 257 mL (to three significant figures).

A FeCl3 Solution Is 0

A FeCl₃ Solution Is 0