Ascorbic acid, H2C6H6O6, is a common diprotic acid with a Ka1 = 8.0 x 10 -5 and Ka2 = 1.6 x 10 -12.
a. What are the three forms of the diprotic acid?
b. What is the principal species at pH = 2.00?
c. What is the principal species at pH = 6.10?
d. What is the principal species at 13.80?
e. What is the second most prominent species at pH = 8.10?
f. At what pH is [H2C6H6O6] = [HC6H6O6 - ]?
g. At what pH is [HC6H6O6 - ] = [C6H6O62 - ]?
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