Chapter 21, Problem 21.38P

Interpretation Introduction

Interpretation:

The pH of the solution obtained by titrates ${\text{HNO}}_{\text{2}\left(\text{aq}\right)}$ with Sodium hydroxide has to be calculated.  The suitable indicator for this titration has to be selected.

Concept Introduction:

pH definition:

The concentration of hydrogen ion is measured using $\text{pH}$ scale.  The acidity of aqueous solution is expressed by $\text{pH}$ scale.

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

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