Ascorbic acid is a diprotic weak acid with pKa1 = 4.17 and pKa2 = 11.56. A 200 ml solution of ascorbic acid is titrated to a pH of 12.1 by addition of 8 ml of 5 M NaOH. A. What was the concentration of ascorbic acid in the original solution? First find the number of moles and then use 200 ml as the original volume. B. How many moles (or mmoles) of the fully protonated, singly dissociated, and doubly dissociated states of ascorbic acid are present after addition of NaOH? You determined the number of moles of NaOH and ascorbic acid for part A, now apply those values to the various states of the molecule. Write zero for any state with a very low value (less than 1% of total). C. What is the remaining good buffering capacity towards OH- of the relevant chemical group (if already beyond good range, state zero). State your answer in moles/mmoles.