Step-by-step explanation:
To calculate the pH of a buffer with a known pKa for the conjugate acid, the Henderson-Hasselbach equation can be used to obtain the pH of the buffer:
![pH = pK_a + log_(10)(([A^-])/([HA]) )](https://img.qammunity.org/2024/formulas/chemistry/college/2uynfxlz03ywu349x8mr0p992bnvkfdztj.png)
[A-] is the concentration of the conjugate base and [HA] is the concentration of the conjugate acid.