Chapter 1, Problem 21P

Interpretation Introduction

(a)

Interpretation:

Whether the buffer is effective near $\text{pH}$ 7 or not should be determined.

Concept introduction:

The expression used to derive the value of $\text{pH}$ is given as,

$\text{pH}=\text{p}{K}_{\text{a}}+\log \frac{\left[\text{product}\right]}{\left[\text{reactants}\right]}$

Where,

• $\text{p}{K}_{\text{a}}$ is the dissociation constant.
• $\left[\text{product}\right]$ is the concentration of products.
• $\left[\text{reactants}\right]$ is the concentration of reactants.

Interpretation Introduction

(b)

Interpretation:

The $\text{pH}$ for the usefulness of a sulfate-based buffer is to be determined.

Concept introduction:

The expression used to derive the value of $\text{pH}$ is given as,

$\text{pH}=\text{p}{K}_{\text{a}}+\log \frac{\left[\text{product}\right]}{\left[\text{reactants}\right]}$

Where,

• $\text{p}{K}_{\text{a}}$ is the dissociation constant. of acid.
• $\left[\text{product}\right]$ is the concentration of products.
• $\left[\text{reactants}\right]$ is the concentration of reactants.