Secondly, the diazonium salt is then coupled with dimethylaniline, as shown in the structural reaction below: How Does Methyl Orange Work? How a universal indicator paper is used to measure the pH value of a solution? It should be remembered that the lower the pH of a solution, the more acidic it is.
We can see the color changes of methyl orange because it absorbs light in the visible part of the electromagnetic spectrum.
Applications Analysis of chemical and pharmaceutical substances Many chemicals require titration.