Chapter 6, Problem 6G.3E

(a)

Interpretation Introduction

Interpretation:

The $p{K}_{a}and{K}_a$ for glyceric acid in the solution has to be calculated.

Concept Introduction:

Henderson – Hasselbalch equation:

The $pH$ of a buffer can be easily calculated by using Henderson – Hasselbalch equation as given below.

  $\begin{array}{c}pH=p{K}_a+\log \frac{{\left[base\right]}_{initial}}{{\left[acid\right]}_{initial}}\\ \\ =p{K}_a+\log \left(\frac{molesofbase}{molesofacid}\right)\end{array}$

(b)

Interpretation Introduction

Interpretation:

The $pH$ of the buffer has to be calculated when the concentration of acid was twice that of the salt.

Concept Introduction:

Refer to part (a).