AP Chemistrymediummcq1 pt
Diluting 100 mL of a buffer with water to 1.0 L does what to its pH?
A.Leaves the pH nearly unchanged
B.Raises the pH by 1
C.Lowers the pH by 1
D.Makes the pH equal to pKa always
Explanation
Core Concept
Dilution lowers both [A⁻] and [HA] equally, so their ratio — and thus pH — barely moves. Capacity drops, but pH holds.
Correct Answer
ALeaves the pH nearly unchanged
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