Question

If 125mL of a 0.15M NaOH solution is diluted to 150mL, what will the new molarity of the solution be?

Answer 1

C NaOHsln = 0.125 M

Step-by-step explanation:

Molarity (M) [=] mol/L

∴ moles NaOH = (0.125 L)(0.15 mol/L) = 0.01875 mol

∴ Vsln = 150 mL = 0.150 L

New Molarity:

⇒ C NaOH = 0.01875 mol/0.150 L

⇒ C NaOH = 0.125 M