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pH at the Equivalence Point

APCHEM-DKNBUU

Consider the titration of 50.0 mL of a 0.10 M $HA$ solution by a 0.10 M $NaOH$ solution. The $K_a$ of $HA$ is $1 × 10^{-4}$.

What is the pH at the equivalence point?

A

5.6

B

7

C

8.4

D

9.3