You wish to prepare 140.0 mL of a 3.0 M solution of NaOH by diluting a concentrated 10.0 M NaOH solution.What volume of the concentrated solution is required to do this?

Question

Quizplus · Accepted Answer

We can use the formula: M1V1 = M2V2
Where M1 is the concentration of the concentrated solution, V1 is the volume of the concentrated solution needed, M2 is the concentration of the diluted solution and V2 is the total volume of the diluted solution.

Rearranging the formula, we get:
V1 = (M2V2)/M1
Substituting the given values,
V1 = (3.0 mol/L x 0.140 L) / 10.0 mol/L
V1 = 0.42 L or 42 mL

Therefore, the volume of the concentrated solution required is 42 mL. Answer choice C is correct.

You Wish to Prepare 140