The dihydrogenphosphate ion, H₂PO₄^-, has both a conjugate acid and a conjugate base. These are, respectively, A) H₂PO₄^- and HPO₄²^- B) HPO₄²^- and H₃PO₄ C) HPO₄²^- and PO₄³^- D) H₃PO₄ and PO₄³^- E) H₃PO₄ and HPO₄²^-

Question

Quizplus · Accepted Answer

In the dihydrogenphosphate ion, H₂PO₄^-, the hydrogen atom bound to the oxygen atom can lose a proton (H+) to become HPO₄²^-, making it the conjugate base. Conversely, the H+ ion can be added to the phosphate group to form H₃PO₄, making it the conjugate acid. Choice E correctly identifies these as the conjugate acid and conjugate base, respectively.

The Dihydrogenphosphate Ion, H2PO4-, Has Both a Conjugate Acid and a Conjugate

The Dihydrogenphosphate Ion, H₂PO₄^-, Has Both a Conjugate Acid and a Conjugate