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Practice question

Question

Which of the following pairs of solutions can act as a buffer?

Options

Choose one · Correct answer highlighted

Explanation

CH₃COOH and CH₃COO⁻Na is the scientifically accurate answer to this question. Within the study of Acid, Base, pH, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of CH₃COOH and CH₃COO⁻Na directly address what is being asked. Among the other options, HCl and NaCl, NaOH and NaCl, and H₂SO₄ and HSO₄⁻ do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.