Chapter 19.17, Problem 19.24P

Interpretation Introduction

Interpretation:

The mechanism for the synthesis of methyl orange is to be proposed.

Concept introduction:

Methyl orange is the indicator which is used to detect whether the solution is acidic or basic. The change in colour depends on the $\text{pH}$ of the solution. The colour change observed when methyl orange is added to an acidic solution is orange to red. Indicators are always added in small amount to observe the change in colour of the solution.