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AP®︎/College Chemistry

Course: AP®︎/College Chemistry > Unit 8

Lesson 6: Buffers

Buffers

AP.Chem: SAP‑10 (EU), SAP‑10.B (LO), SAP‑10.B.1 (EK), SAP‑10.C (LO), SAP‑10.C.1 (EK), SAP‑10.D (LO), SAP‑10.D.1 (EK)

A student prepares a buffer by combining samples of H, C, N, left parenthesis, a, q, right parenthesis and N, a, C, N, left parenthesis, a, q, right parenthesis. A particle view of the buffer solution is shown below. Water molecules and cations are not depicted.

Which of the following is true about the start text, p, H, end text of the buffer? (The start text, p, end text, K, start subscript, a, end subscript of H, C, N is 9, point, 21.)

(Choice A)
start text, p, H, end text, is less than, 9, point, 21
(Choice B)
start text, p, H, end text, equals, 9, point, 21
(Choice C)
start text, p, H, end text, is greater than, 9, point, 21
(Choice D)
The relative start text, p, H, end text of the buffer cannot be determined without additional information.

[AP Chemistry equations and constants]

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AP®︎/College Chemistry

Course: AP®︎/College Chemistry > Unit 8

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