AP Chemistrymediummcq1 pt
Which change to a buffer system most reduces its capacity?
A.Diluting it tenfold
B.Keeping it at pKa
C.Using a weak acid with pKa near the target pH
D.Mixing equal moles of HA and A⁻
Explanation
Core Concept
Capacity tracks total buffer concentration, so tenfold dilution leaves a tenth of the absorbing power, even though pH holds.
Correct Answer
ADiluting it tenfold
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