Chapter U4.22, Problem 2E

Interpretation Introduction

Interpretation: The role of an indicator in the titration is to be stated.

Concept introduction: The reaction in which hydrogen ion $\left({\text{H}}^{+}\right)$ and hydroxide ion $\left({\text{OH}}^{-}\right)$ combine together to form water is termed as neutralization reaction. An acid base neutralization reaction is a type of reaction in which acid and base combine together quantitatively to form water and salt.

Answer to Problem 2E

The indicator indicates the end point during the titration.

Explanation of Solution

The titration is phenomenon via which the strength of acid or base is calculated. In titration, the solution with known concentration is termed as standard solution. The standard solution reacts with the sample to be analyzed. The color change indicates the end point. This color change is due the presence of 2-3 drops of indicator. Indicators have different color in acid or base. Therefore, indicators are also used to distinguish acid, base, and neutral substances.

In case of titration, the indicator is used to identify the end point.

Conclusion

The indicator is used to identify the end point during the titration.