Chapter 8, Problem 53P

Interpretation Introduction

Interpretation: The pH of the solution containing 0.040 M ${\text{NaCH}}_{\text{3}}{\text{CO}}_{\text{2}}$ and 0.080 M ${\text{CH}}_{\text{3}}\text{COOH}$ needs to be calculated.

Concept Introduction: The pH of buffer solution is calculated using Henderson-Hasselbalch equation.

$pH=p{K}_a+\log \frac{\left[\text{Salt}\right]}{\left[\text{Acid}\right]}$

Here, $p{K}_a$ is $\log K_a$ and $K_a$ is acid dissociation constant.