AP Chemistry Question 432: Answer and Explanation
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10. Identify the Brønsted-Lowry conjugate acid-base pair in the following list.
- A. H3O+ and OH-
- B. H3PO4 and H2PO4-
- C. HClO4 and ClO3-
- D. SO32- and HSO2-
Correct Answer: B
(B) The two phosphate species differ by only one H+.