The pH of a buffer depends mainly on the pK_a of the weak acid component of the buffer.

Name: The pH of a buffer depends mainly on the pK a of the weak acid component of the buffer.
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Quizplus · Accepted Answer

The pH of a buffer is determined by the equilibrium between the weak acid and its conjugate base. The pKa (or pK_a for bases) of the weak acid/base component determines the extent of protonation/deprotonation of the buffer, and therefore its pH.

The PH of a Buffer Depends Mainly on the PKa

The PH of a Buffer Depends Mainly on the PK_a