Buffer Capacity

AP Chemistry· difficulty 3/5

Buffer capacity is greatest when

A
$pH ≪ pKa$
B
$[A⁻] ≫ [HA]$
C
$Concentration is low$
D
$Components are at equal concentration AND total concentration is high$
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Explanation

Both equal ratio (around pKa) and large absolute amounts give the most resilience.

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