Explain diazonium coupling with phenol, identify the azo group, and connect azo compounds with dyes.
Identify the properties of azo compounds (Some examples include: (a) Describe the coupling of benzenediazonium chloride with phenol in NaOH(aq) to form an azo compound (b) identify the azo group (c) state that azo compounds are often used as dyes Recognize that other azo dyes can be formed via a similar route).