The concentration of the weak acid and its conjugate base can help us to obtain the pH of the solution.
What is Henderson-Hasselbalch equation?
The Henderson-Hasselbalch equation is used to obtain the the concentration of an acid or its conjugate base when the pKa (acid dissociation constant) and the pH of the solution are known.
The question is incomplete but the concentration of the weak acid and its conjugate base can help us to obtain the pH of the solution.
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