Question

You have a 2.0 M solution of HNO3. To what volume in mL would you dilute 500.0 mL to achieve a pH of 4.00?

Answer 1

pH = 4.00 = (H^+) = 1E-4

M1V1 = M2V2
2.0M x 500 mL = 1E-4 x ?mL