---
title: "An aqueous solution contains dihydrogen phosphate ions and ammonia reacting according to the equilibrium below.  \\(\\text{H}_2\\text{PO}_4^-\\text{(aq)} + \\text{NH}_3\\text{(aq)} \\rightleftharpoons \\text{HPO}_4^{2-}\\text{(aq)} + \\text{NH}_4^+\\text{(aq)}\\)  Which of the following correctly identifies a Brønsted-Lowry acid and its conjugate base in this reaction?"
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url: "https://nerd-notes.com/ubq/119246/"
date_modified: "2026-08-19T12:39:32+00:00"
---

# An aqueous solution contains dihydrogen phosphate ions and ammonia reacting according to the equilibrium below.

\(\text{H}_2\text{PO}_4^-\text{(aq)} + \text{NH}_3\text{(aq)} \rightleftharpoons \text{HPO}_4^{2-}\text{(aq)} + \text{NH}_4^+\text{(aq)}\)

Which of the following correctly identifies a Brønsted-Lowry acid and its conjugate base in this reaction?

An aqueous solution contains dihydrogen phosphate ions and ammonia reacting according to the equilibrium below.

\(\text{H}_2\text{PO}_4^-\text{(aq)} + \text{NH}_3\text{(aq)} \rightleftharpoons \text{HPO}_4^{2-}\text{(aq)} + \text{NH}_4^+\text{(aq)}\)

Which of the following correctly identifies a Brønsted-Lowry acid and its conjugate base in this reaction?

- **A.** Acid: \(\text{H}_2\text{PO}_4^-\text{(aq)}\); Conjugate base: \(\text{HPO}_4^{2-}\text{(aq)}\)
- **B.** Acid: \(\text{NH}_3\text{(aq)}\); Conjugate base: \(\text{NH}_4^+\text{(aq)}\)
- **C.** Acid: \(\text{H}_2\text{PO}_4^-\text{(aq)}\); Conjugate base: \(\text{NH}_4^+\text{(aq)}\)
- **D.** Acid: \(\text{HPO}_4^{2-}\text{(aq)}\); Conjugate base: \(\text{H}_2\text{PO}_4^-\text{(aq)}\)

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