Ascorbic acid (H₂C₆H₆O₆) contains two ionizable protons. Calculate the concentration (in M) of the ascorbate ion (C₆H₆O₆2-) of a 0.040 M ascorbic acid solution.
a) 0.040 M
b) 0.080 M
c) 0.020 M
d) 0.040 M