Solutions from More Concentrated Solutions:
How would you make 125 mL of a 0.750 M NaOH solution
from a 2.00 M NaOH solution?
We need to know the
volume of 2.00 M NaOH to be diluted. We recognize this question as a
dilution problem because it mentions two concentrations of the same
substance and refers to the creation of a more dilute solution from a more
concentrated solution. We can use the dilution equation for our
MC = 2.00 M VC = ?
MD = 0.750 M VD = 125 mL
We could also use the dimensional analysis
= 46.9 mL of the more concentrated solution
Using this information, we would make the
solution following these steps:
- Add 46.9 mL of 2.00 M
NaOH into a 250-mL graduated cylinder.
- Add water to the
cylinder until the total volume is 125 mL.
Click here to see a sample study sheet
for this task.
Click here to see an
exercise that will allow your to try this task yourself.
the Making Solutions Page.