You need to prepare an acetate buffer of pH 5.38 from a 0.872 M acetic acid solution and a 2.78 M KOH solution. If you have 980 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.387 The pK, of acetic acid is 4.76. Be sure to use appropriate significant figures. ml