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General Chemistry

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Moderate

Producing a Buffer Using Partial Titration

CHEM-NRAO$0

Partial titration can be used to produce a buffer from a solution of weak acid. You add $NaOH$ to a solution of benzoic acid $(K_{a}\ (benzoic \ acid) = 6.3 \times 10^{-5})$ until you reach the midpoint of the titration, also called the half-equivalence point.

What is the pH of the solution at this point?

A

$4.2$

B

$7.0$

C

$9.8$

D

More information is needed.