AP®︎ Chemistry: Topic 8.10 Flashcards

Master key terms and definitions for Topic 8.10 of AP Chemistry – Buffer Capacity to help you prep for quizzes and the AP exam.

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Term

Buffer Capacity

Definition

The amount of acid or base a buffer can neutralize before pH changes significantly.

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Buffer Capacity
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The amount of acid or base a buffer can neutralize before pH changes significantly.

8.10.A
Concentration Magnitude and Buffer Capacity
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Higher concentrations of both buffer components increase resistance to pH change without changing pH if their ratio stays constant.

8.10.A8.10.A.1
Constant Ratio, Same pH
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If conjugate acid and base concentrations change proportionally, the pH stays the same.

8.10.A8.10.A.1
Directional Buffer Capacity
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A buffer neutralizes added acid or base better depending on which conjugate component is present in greater amount.

8.10.A8.10.A.2
Directional Buffer Capacity Comparison
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Whichever buffer component is more abundant determines whether added acid or base is better neutralized.

8.10.A8.10.A.2
Buffer Neutralization Reactions
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Conjugate base removes added H+ and weak acid removes added OH− in a buffer.

8.10.A