Chapter 16, Problem 29A

Interpretation Introduction

Interpretation:

The change of pH of the solution with an increase in the hydrogen ion concentration needs to be explained.

Concept Introduction:

The acidity or alkalinity of a solution is expressed by determining $\text{pH}$ of the solution. $\text{pH}$ of a solution is defined as the negative logarithm of the concentration of H+ ion in the solution. $\text{pH}$ is expressed as-

  $\text{pH}=-log[H^{+}]$

Explanation of Solution

  $\text{pH}$ of a solution is defined mathematically as the negative logarithm of the concentration of H+ ion in the solution. $\text{pH}$ is expressed as

  $\text{pH}=-log[H^{+}]$

  $\text{pH}$ of a solution is the negative logarithm of the concentration of ${\text{H}}^{+}$ ion in the solution. With an increase in the concentration of ${\text{H}}^{+}$ ion, the value of log [ ${\text{H}}^{+}$] increases. As $\text{pH}$ is a negative logarithm of [ ${\text{H}}^{+}$], it decreases. Therefore, the acidity of the solution increases.