Chapter 16, Problem 16.3P

Interpretation Introduction

Interpretation: The $\text{pH}$ of a $1.0\text{mL}$ buffer after the addition of $0.015\text{mol}$ of $\text{NaOH}$ to the original buffer that contains $0.100\text{mol}$ in ${\text{HC}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_{\text{2}}$ and $0.100\text{mol}$ in ${\text{NaC}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_{\text{2}}$ is to be calculated.

Concept introduction: The 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. The buffer solution resists the $\text{pH}$ change by neutralizing added amount of acid or base.

The acid in a buffer solution neutralizes the added base and the base present in buffer solution neutralizes the added acid.

To determine: The $\text{pH}$ of a $1.0\text{mL}$ buffer after the addition of $0.015\text{mol}$ of $\text{NaOH}$ to the original buffer that contains $0.100\text{mol}$ in ${\text{HC}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_{\text{2}}$ and $0.100\text{mol}$ in ${\text{NaC}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_{\text{2}}$ .