Question

How do you calculate the pH of a buffer solution?

Answer 1

You use the equation of Henderson-Hasselbalch.

A buffer is a solution of a weak acid and its conjugate base.

`underbrace ("HA")_text(acid) + "H"_2"O" ⇌ "H"_3"O"^+ + underbrace("A"^-)_text(base)`

The Henderson-Hasselbalch Equation gives you the pH of the buffer.

`"pH" = "p"K_"a" + log("[base]"/"[acid]")`

This video explains in detail how to calculate the pH of a Buffer solution:
Acid - Base Equilibria | Buffer Solution.

Answer 2

Watch this video.

Explanation:

This video explains in detail how to calculate the pH of a Buffer solution:
Acid - Base Equilibria | Buffer Solution.