AP Chemistrymediummcq1 pt
Which region of a weak-acid titration curve is the buffer region?
A.The flat zone around the half-equivalence point
B.The steep rise at the equivalence point
C.The initial pH reading
D.Past excess base
Explanation
Core Concept
Near half-neutralization both HA and A⁻ are abundant, so pH resists change — the curve flattens. This plateau is the buffer region.
Correct Answer
AThe flat zone around the half-equivalence point
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