Recent content by rls623

  1. R

    Creating Buffer pH 3.9 | 0.2M NaOH, 0.2M Acetic Acid

    Thanks for your help. I'm not sure I understand what formality and nornality are though. I ended up getting an answer to the problem, but I did it differently. I plugged the pH and pKa values into the H-H eqn to find the ratio of [HAc]/[Ac-]. This gave me that I need 0.125 mol of Ac- for...
  2. R

    Creating Buffer pH 3.9 | 0.2M NaOH, 0.2M Acetic Acid

    typo It's not 2000 L of solution, but rather 2000mL. Oops.
  3. R

    Creating Buffer pH 3.9 | 0.2M NaOH, 0.2M Acetic Acid

    Homework Statement You need to prepare 2000 L of buffer pH 3.9. You have available 0.2 M NaOH solution and 0.2 M Acetic acid (pKa=4.8). How much of each solution do you need? Homework Equations I know that I have to use the H-H eqn: pH = pKa + log([HA]/[A-]) The Attempt at a...