Answer:
41 mL
Explanation:
Pre-Solving
We are given that we want to dilute 12 mL of a 8.25 M sodium hydroxide solution to be at a concentration of 2.40 M. We want to find the volume of the solution at 2.40 M.
Recall the dilution equation: C1V1 = C2V2.
Solving
Substitute 12 mL as V1, 8.25 M as C1, and 2.40 M as C2.
We get:
12 mL * 8.25 M = 2.40 M * V2
Now, divide both sides by 2.40 M
12 mL * 8.25 M = 2.40 M * V2
÷2.40 M ÷2.40M
____________________
41 mL = V2 (rounded to 2 sig figs)
