?

AP® Chemistry

Free Version

Upgrade subject to access all content

Moderate

Finding the pH of a Buffer

APCHEM-4UOFX9

The $K_a$ of $HA$ is $1.0 \times 10^{-4}$.

What is the pH of a buffer that is 0.08 M $NaA$ and 0.1 M $HA$?

A

2.16

B

3.91

C

4.00

D

4.10