For the phosphoric acid system, calculate and prepare the graph showing the fraction of each species (H3PO4, H2PO4-, HPO4 2- and PO4 3-), given the values of equilibrium constants as:
Ka1 = 7.5 x 10^(-3)
Ka2 = 6.2 x 10^(-8)
Ka3 = 4.8 x 10^(-13)
The relevant reactions are:
H3PO4 -> H+ + H2PO4-
H2PO4- -> H+ + HPO4 2-
HPO4 2- -> H+ + PO4 3-
The deadline for the submission is Sep 8, 2017.
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