Chapter 14, Problem 46E

Interpretation Introduction

Interpretation:

By taking the reference of exercise $\text{45}$, the ratio of $\left[{\text{H}}_{\text{2}}{\text{CO}}_{\text{3}}\right]/\left[{\text{HCO}}_{\text{3}}{}^{-}\right]$ is to be calculated when the $\text{pH}$ decreases from $\text{7}\text{.40}$ to $\text{7}\text{.35}$.

Concept introduction:

The $\text{pH}$ value is the measure of ${\text{H}}^{+}$ ions. The relation between $\text{pH}$ and $\text{p}{K}_{\text{a}}$ is given by Henderson-Hassel Bach equation. According to this equation,

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

To determine: The affect on the ratio, $\left[{\text{H}}_{\text{2}}{\text{CO}}_{\text{3}}\right]/\left[{\text{HCO}}_{\text{3}}{}^{-}\right]$ when the $\text{pH}$ decreases from $\text{7}\text{.40}$ to $\text{7}\text{.35}$.