Chapter 16, Problem 16.4P

Interpretation Introduction

Interpretation:

The $\text{pH}$ of the $1.0\text{L}$ buffer solution after the addition of $0.010\text{mol}$ of solid $\text{NaOH}$ to the original buffer that contains $0.50\text{M}$ in ${\text{NH}}_3$ and $0.20\text{M}$ in ${\text{NH}}_4\text{Cl}$ is to be calculated.

Concept introduction: A buffer solution is an aqueous solution contains the mixture of a weak acid and its conjugate base or the mixture of weak base with its conjugate acid. A buffer solution resists the $\text{pH}$ change by neutralizing added amount of acid or base.

To determine: The $\text{pH}$ of the $1.0\text{L}$ buffer solution after the addition of $0.010\text{mol}$ of solid $\text{NaOH}$ to the original buffer that contains $0.50\text{M}$ in ${\text{NH}}_3$ and $0.20\text{M}$ in ${\text{NH}}_4\text{Cl}$ .