State its titrated with naoh and being a triprotic

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Reference no: EM13205198

This is a titration of a triprotic acid. For example H3PO4, phosphoric acid. The titration curve pH vs. volume shows only two equivalence points. Its titrated with NaOH. Being a triprotic and having 3 acid dissociation constants Ka1, Ka2, Ka3 one would expect to see three equivalence points.

Why does it only show two equivalence points?

Reference no: EM13205198

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