Chapter 16, Problem 16.1MP

Interpretation Introduction

Interpretation:

The $\text{pH}$ of a buffer that results from mixing $60.0\text{mL}$ of $0.250\text{M}$

${\text{HCHO}}_{\text{2}}$ and $15.0\text{mL}$ of $0.500\text{M}$ in ${\text{NaCHO}}_{\text{2}}$ 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 buffer that results from mixing $60.0\text{mL}$ of $0.250\text{M}$

${\text{HCHO}}_{\text{2}}$ and $15.0\text{mL}$ of $0.500\text{M}$ in ${\text{NaCHO}}_{\text{2}}$ .