Chapter 8, Problem 52P

Interpretation Introduction

Interpretation: The pH of the solution containing 0.15 M ${\text{HNO}}_{\text{2}}$ and 0.20 M of ${\text{NaNO}}_{\text{2}}$ is to be determined.

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.