I really need help. I am a teacher and can't seem to figure out this problem, although I know I did it once before. I have used a virtual lab and know that you need 71 ml of acetic acid and 29 ml of NaOH, but dont know how to calculate it. Can someone tell me? I know the concentration of H in the solution from the pH and I know the percent ionisation using the K=1.85 X 10^-5. I am pretty sure that you use the ratio of CH3COO- concentration,which is related to the OH- concentration,and CH3COOH concentration, but can't seem to figure it out. Anyway, I hope someone can help me You have two bottles, one filled with 1M HAc (HAc = acetic acid) and one filled with 1M NaOH. You want to make 100ml of a buffer with pH=4.6 by mixing together appropriate amounts of these solutions. How much of each solution do you use?