AP Chemistrymediummcq1 pt
A buffer solution resists changes in pH because it:
A.Is always neutral (pH = 7)
B.Contains a weak acid and its conjugate base
C.Has a very high concentration of H⁺ ions
D.Contains a strong acid and a strong base
Explanation
Core Concept
A buffer consists of a weak acid and its conjugate base (or weak base and its conjugate acid). The weak acid neutralizes added base, and the conjugate base neutralizes added acid, resisting pH changes.
Correct Answer
BContains a weak acid and its conjugate base
Practice more AP Chemistry questions with AI-powered explanations
Practice Unit 8: Acids and Bases Questions →