Compounds Containing Nitrogen

Aliphatic amines are weaker bases than $\mathrm{NH}_3$ while aromatic amines are stronger bases than $\mathrm{NH}_3$.

Gabriel phthalimide synthesis is used for preparing both Ethyl amine and Aniline.

Anilinium ion is less resonance stabilised than Aniline.

Sec-butylamine is optically inactive because Nitrogen atom of the $-\mathrm{NH}_2$ group is achiral.