Chapter 2, Problem 21P

Summary Introduction

To determine: The ${\text{pK}}_{\text{2}}$ of the compound if the $\text{10}\text{mL}$ of $\text{1}\text{.0}\text{M}$ of solution at a $\text{pH}$ of $8.0$ is added to the $\text{10}\text{mL}$ of $\text{1}\text{.0}\text{M}$ of $\text{HCl}$ and the $\text{pH}$ drops to $3.20$.

Introduction:

The Henderson-Hasselbalch equation depicts the measurement of acidity as $\text{pH}$ (potential of hydrogen) in biochemical reactions. The isoelectric point and $\text{pH}$ of buffers are calculated by this reaction. The $\text{pH}$ is used to calculate the ${\text{pK}}_{\text{a}}$ of molecules. The “ionized and unionized” concentrations of chemicals are estimated with the help of this equation. The ${\text{pK}}_{\text{a}}$ is used to calculate the $\text{pH}$ of molecules.