Which of the Following Is True Regarding a Phosphoric Acid

question 126

Multiple Choice

Which of the following is true regarding a phosphoric acid solution?

• A)H₃PO₄ completely ionizes to form H₂PO₄^- and H₃O⁺.
• B)At equilibrium,the major species present are H₂O,H₃O⁺ and PO₄^3-.
• C)There are no HPO₄^2- or PO₄^3- ions present at equilibrium.
• D)At equilibrium,H₃PO₄ is present at the highest concentration,followed by H₂PO₄^-,HPO₄^2-,and PO₄^3-.
• E)H₃PO₄,H₂PO₄^-,HPO₄^2-,and PO₄^3- generate hydronium ions in the solution.

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