Chapter 17.2, Problem 6CP

Interpretation Introduction

Interpretation:

The increasing order of pH of the given solutionsis to be determined, out of the given options.

Concept introduction:

A solution that opposes the change in pH value on dilution or on addition of a small amount of acid or base, is called a buffer solution.

It consists of the mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

The $\text{pH}$ of a solution is calculated by using the Henderson-Hasselbalch equation, given as follows:

$\text{pH}=p{K}_a+\log \frac{\left[\text{conjugate base}\right]}{\left[\text{acid}\right]}$

Here, $\left[\text{acid}\right]$ and $\left[\text{conjugate base}\right]$ are the concentrations of acid and conjugate base respectively.