Chapter 17, Problem 17.69QP

(a)

Interpretation Introduction

Interpretation:

The buffer range, that is the range of the concentration ratio over which the buffer is effective-is given by $\text{pH}\text{=}{\text{pK}}_{\text{a}}\text{±}\text{1}$ has to be shown.

Concept Introduction:

Henderson-Hasselbalch equation:

General form of Henderson-hasselbalch equation to calculate the $\text{pH}$ of the solution is given by

  $\begin{array}{l}\text{pH}\text{=}{\text{pK}}_{\text{a}}\text{+}\text{log}\frac{\left[\text{conjugate}\text{base}\right]}{\left[\text{acid}\right]}\\ \\ \text{where,}\\ \text{pH}\text{=}\text{-}\text{log}\left(\text{hydrogen}\text{ion}\text{concentration}\right)\\ {\text{pK}}_{\text{a}}\text{=}\text{-}\text{log}\left(\text{acid}\text{dissociation}\text{constant}\right)\end{array}$

(b)

Interpretation Introduction

Interpretation:

The $\text{pH}$ range of the given buffer systems have to be calculated.