---
title: "A student attempts to prepare a buffer solution by mixing equal volumes of two 0.20 M aqueous solutions. Which of the following pairs of solutions will produce an effective buffer solution?"
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date_modified: "2026-08-19T12:39:33+00:00"
---

# A student attempts to prepare a buffer solution by mixing equal volumes of two 0.20 M aqueous solutions. Which of the following pairs of solutions will produce an effective buffer solution?

A student attempts to prepare a buffer solution by mixing equal volumes of two 0.20 M aqueous solutions. Which of the following pairs of solutions will produce an effective buffer solution?

- **A.** 0.20 M HCl(aq) and 0.20 M NaOH(aq)
- **B.** 0.20 M HF(aq) and 0.20 M NaOH(aq)
- **C.** 0.20 M HF(aq) and 0.20 M NaF(aq)
- **D.** 0.20 M HCl(aq) and 0.20 M NaF(aq)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119255/*