Chapter 13: Problem 3
You have carried out a synthetic procedure which results in a mixture of 2 -nitroaniline (literature \(\mathrm{m} . \mathrm{pt}=92{ }^{\circ} \mathrm{C}\) ) and 4-nitroaniline (literature m.pt. \(\left.=148^{\circ} \mathrm{C}\right)\). Purification by recrystallisation is said to separate the two isomers and your sample, when mixed with pure 4-nitroaniline, has a m.pt. range \(147-148^{\circ} \mathrm{C}\). What can you conclude?