Problem: Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (I) or (aq), are optional. Each successive ionization reaction removes an H+ ion, so the final reaction should produce the unprotonated PO43- ion.

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Phosphoric acid (H3PO4) is a weak triprotic acid, meaning it can donate three protons (H+and it will have three equilibrium reactions.

Removing one H+ per step in H3PO4:

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Problem Details

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (I) or (aq), are optional. 

Each successive ionization reaction removes an H+ ion, so the final reaction should produce the unprotonated PO43- ion.

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