Chapter 19.2, Problem 21LC

Interpretation Introduction

Interpretation : As the pH of a solution increases, the concentration of hydrogen ions decreases or increases relate and effect.

Concept Introduction : The negative logarithm of the concentration of hydrogen ions is the pH of a solution. The formula to calculate pH is given as

  $\text{pH=}-{\text{log[H}}^{\text{+}}\text{]}$

Answer to Problem 21LC

As the pH of a solution increases, the concentration of hydrogen ions decreases.

Explanation of Solution

The pH is less than 7.0 if the hydrogen ion concentration is larger than $\text{1}\text{.0}\times {\text{10}}^{-7}\text{M}$ .

Acidic solutions have pH values below 7.0.

The concentration of hydrogen ions and pH are inversely proportional to each other.

As the pH increases, the concentration of hydrogen ions decreases.