Question

25.0 mL of a 3.25 M solution is diluted to 450.0 mL. What is the concentration of the diluted solution?

Answer 1

0.181 M

Step-by-step explanation:

Begin by finding the total moles by using the volume and molarity given:

`(3.25 mol)/(1000 mL) x (25.0 mL)/(1) = 0.08125 mol`

(Remember molarity is mol/L, which is equal to mol/1000 mL.)

Divide the moles by the volume after dilution:

`(0.08125 mol)/(450.0 mL) x (1000 mL)/(1 L) = (0.181 mol)/(L) = 0.181 M`

The concentration of the diluted solution is 0.181 M.