What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.34.2.1Preparation of phenylamine via the nitration• Describe the preparation of phenylamine via the nitration of benzene to form nitrobenzene followed by reduction with hot Sn/conc. HCl followed by NaOH(aq)Syllabus objective34.2.2Describe• Describe:: (a) the reaction of phenylamine with Br₂(aq) at room temp.; (b) the reaction of phenylamine with HNO₂ or NaNO₂ and dil. acid below 10 °C to produce the diazonium salt; further warming of the diazonium salt with H₂O to give phenolSyllabus objective34.2.3Basicities of aq. ammonia, ethylamine• Describe/explain: the relative basicities of aq. ammonia, ethylamine and phenylamineSyllabus objective34.2.4About azo compounds• Recall the following about azo compounds:- (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- (d) that other azo dyes can be formed via a similar routeSyllabus objective