1. In other words, how does the ph of the solution affect the reactivity of the N, N-dimethylaniline reagent? In an experiment a point is made that the formation of the azo compound is a slow reaction, but that the rate is increased by raising the ph of the solution. Why is this necessary?
2. What effect does the ph of the solution have on the reactivity of the phenol? In this reaction, diazonium salts couple with phenols in slightly alkaline solution.