a) Write a reaction mechanism to show how propanoyl chloride is converted to propanamide using ammonia.
b)i) Amines can be used in the manufacture of azo dyes. The intermediate is an unstable diazonium ion. Write a balanced equation to show how phenylamine can be made into the diazonium ion.
ii) Show how the diazonium ion in i) can couple with phenol to form the azo compound.