Chapter 5, Problem 5.45P

Interpretation Introduction

Interpretation:

A $pH$ curve of a solution containing $0.10MNaC{H}_{3}C{O}_2(aq)$ and variable amount of acetic acid has to be determined.

Concept Introduction:

For the titration of a weak acid with a weak base, the $pH$ before the equivalence point depends on the excess concentration of acid and the $pH$ after the equivalence point depends on the excess concentration of base.  At the equivalence point, there is not an excess of either acid or base so $\text{pH}$ is $\text{7}\text{.0}$.  The equivalence point occurs when total volume of base has been added.

$pH=-\log \left[H_3{O}^{+}\right]$

$pH=-\log \left[O{H}^{-}\right]$

$pH+pOH=14$