---
title: "A student prepares four separate aqueous mixtures at \\(25^\\circ\\text{C}\\) by combining equal volumes of two solutions as listed below. Which mixture produces a solution that functions as a buffer capable of resisting changes in \\(\\text{pH}\\) upon the addition of small amounts of either strong acid or strong base?"
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url: "https://nerd-notes.com/ubq/119732/"
date_modified: "2026-08-21T08:12:10+00:00"
---

# A student prepares four separate aqueous mixtures at \(25^\circ\text{C}\) by combining equal volumes of two solutions as listed below. Which mixture produces a solution that functions as a buffer capable of resisting changes in \(\text{pH}\) upon the addition of small amounts of either strong acid or strong base?

A student prepares four separate aqueous mixtures at \(25^\circ\text{C}\) by combining equal volumes of two solutions as listed below. Which mixture produces a solution that functions as a buffer capable of resisting changes in \(\text{pH}\) upon the addition of small amounts of either strong acid or strong base?

- **A.** \(50.0\text{ mL}\) of \(0.10\text{ M HCl(aq)}\) mixed with \(50.0\text{ mL}\) of \(0.10\text{ M NaOH(aq)}\)
- **B.** \(50.0\text{ mL}\) of \(0.10\text{ M CH}_3\text{COOH(aq)}\) mixed with \(50.0\text{ mL}\) of \(0.10\text{ M NaOH(aq)}\)
- **C.** \(50.0\text{ mL}\) of \(0.20\text{ M HF(aq)}\) mixed with \(50.0\text{ mL}\) of \(0.10\text{ M KOH(aq)}\)
- **D.** \(50.0\text{ mL}\) of \(0.10\text{ M HF(aq)}\) mixed with \(50.0\text{ mL}\) of \(0.20\text{ M KOH(aq)}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119732/*