1. H3PO4 (aq) + H2O (l) ⇌ H2PO4⁻ (aq) + H3O⁺ (aq)
2. H2PO4⁻ (aq) + H2O (l) ⇌ HPO4²⁻ (aq) + H3O⁺ (aq)
3. HPO4²⁻ (aq) + H2O (l) ⇌ PO4³⁻ (aq) + H3O⁺ (aq)
Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.
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