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Write chemical equations and corresponding equilibrium expressions for each of the three ionization steps of phosphoric acid.
A.) Write chemical equations for first ionization step of phosphoric acid. H3PO4(aq)+H2O(l) <--> H3O+(aq) + H2PO4^- (aq)
B.) Write chemical equations for second ionization step of phosphoric acid.
C.) Write chemical equations for third ionization step of phosphoric acid.
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