Chapter 10.9, Problem 3QQ

Interpretation Introduction

Interpretation:

Among the given options, the one that does not describe an acidic solution at $24°\text{C}$ has to be given.

Concept Introduction:

pH definition:

The concentration of hydrogen ion is measured using pH scale.  The acidity of aqueous solution is expressed by pH scale.

The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.

  $\text{pH}\text{=}{\text{-log[H}}_{\text{3}}{\text{O}}^{\text{+}}\text{]}$

Acidic solutions will be pH less than 7 and the concentration of hydronium ions in acidic solution will be higher than the concentration of hydroxide ions.

  $\begin{array}{l}\text{Acidic solution:}\\ \text{pH < 7}\\ {\text{[H}}_{\text{3}}{\text{O}}^{+}]{\text{ > [OH}}^{-}]\end{array}$