Chapter 16, Problem 140E

Interpretation Introduction

Interpretation:

If $p{K}_a$ values for each ionization step are sufficiently different in order to observe two equivalence points, the volume of added base for the first and second equivalence points are to be determined.

The value of $K_{a_1}$ is to be calculated if the pH after the addition of 25.0 mL of the base is 3.82.

The value of $K_{a_2}$ is to be calculated if the pH after the addition of 20.0 mL of the base past the first equivalence point s is 8.25.