1. Calculate the theoretical pH of a solution that is .200 M in both acetic acid and sodium acetate?
2. Diprotic acid: Oxalic Acid H2C2O4 has a pKa1 = 1.27 and a pKa2 = 4.28.
This data can be used to prepare a buffer at pH 4.7
Calculate the mass of sodium hydrogen oxalate (NaHC2O4 (weak acid in buffer)) and sodium oxalate (Na2C2O4 (conjugate base)) necessary to prepare 100mL the buffer at the pH listed (4.7) if the final concentration of the weak acid HC2O4- is ~0.10M