A biochemist needs 750 mL of an acetic acid-sodium acetate buffer with pH = 4.50. Solid sodium acetate NaC2H3O2 and glacial acetic acid HC2H3O2 are available. Glacial acetic acid is 99% HCH3O2 by mass and has a density of 1.05 g/mL.
A) If the buffer is to be 0.20 M in HC2H3O2, how many grams of NaC2H3O2 must be used?
B) How many milliliters of glacial acetic acid must be used?