The Equation That Represents K_a2 for Phosphoric Acid Is

question 48

Multiple Choice

The equation that represents K_a2 for phosphoric acid is

• A) HPO₄^2-(aq) + H₂O(l) ? PO₄^3-(aq) + H₃O⁺(aq)
• B) H₂PO₄^-(aq) + H₂O(l) ? HPO₄^2-(aq) + H₃O⁺(aq).
• C) H₃PO₄(aq) + 2H₂O(l) ? HPO₄^2-(aq) + 2H₃O⁺(aq).
• D) HPO₄^2-(aq) + H₂O(l) ? H₂PO₄^-(aq) + OH^-(aq).
• E) H₃PO₄(aq) + H₂O(l) ? H₂PO₄^-(aq) + H₃O⁺(aq).

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