how many mL of a 1.0M stock solution would be needed to make 100mL of a 0.75M
dilution solution?
To determine how much stock solution is needed to make a dilution solution of a desired concentration, we can use the dilution equation:
C1V1 = C2V2
where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the concentration and volume of the dilution solution.
In this case:
C1 = 1.0 M
C2 = 0.75 M
V2 = 100 mL
We want to solve for V1, the volume of stock solution needed.
C1V1 = C2V2
1.0 M x V1 = 0.75 M x 100 mL
V1 = (0.75 M x 100 mL) / 1.0 M
V1 = 75 mL
Therefore, 75 mL of the 1.0M stock solution would need to be added to make 100 mL of a 0.75M dilution solution.