🦷 DAT Exam Prep

A buffer solution resists pH change because:

A It contains a strong acid
B It contains a weak acid and its conjugate base that neutralize added H+ or OH-
C It is pure water
D It contains only salts

✓ Correct Answer: Option B

Buffer: weak acid neutralizes added base; conjugate base neutralizes added acid. Henderson-Hasselbalch: pH = pKa + log([A-]/[HA]).

💡 Why is B) the correct answer?

The correct answer to the question "A buffer solution resists pH change because:" is Option B: It contains a weak acid and its conjugate base that neutralize added H+ or OH-.

The other options — A) It contains a strong acid, C) It is pure water, D) It contains only salts — are incorrect for this DAT Exam Prep question. As explained above: Buffer: weak acid neutralizes added base; conjugate base neutralizes added acid. Henderson-Hasselbalch: pH = pKa + log([A-]/[HA]).

📚 About This DAT Exam Prep Practice Question

This 2-level DAT Exam Prep question from the General Chemistry topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free DAT Exam Prep practice test or use flashcards for spaced repetition review.

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