Question

Arrange the following compounds as directed : (any Two) (i) In decreasing order of basic strength in aqueous solution : C₂H₅NH₂, (C₂H₅)₂NH, (C₂H₅)₃N (ii) In increasing order of solubility in water : (C₂H₅)₂NH, C₂H₅NH₂, C₆H₅NH₂ (iii) In decreasing order of their pKb values : C₆H₅NH₂, C₂H₅NH₂, NH₃

Answer any three of the following questions : Give reasons for the following :

Arrange the following compounds as directed: (any Two)

Write reasons for the following: (i) Ethylamine is soluble in water whereas aniline is insoluble. (ii) Amino group is o- and p-directing in aromatic electrophilic substitution reactions, but aniline on nitration gives a substantial amount of m-nitroaniline. (iii) Amines behave as nucleophiles.