amines due to increase in size of the hydrophobic alkyl group. Amines are insoluble in water but readily soluble in organic solvents like benzene, ether etc. . .
Chemical properties The lone pair of electrons on nitrogen atom in amines makes them basic as well as nucleophilic. They react with acids to form salts and also react with electrophiles. They form salts with mineral acids Example: C H NH + HCl C H NH Cl - .. Aniline Anilinium chloride Expression for basic strength of amines In the aqueous solutions, the following equilibrium exists and it lies far to the left, hence amines are weak bases compared to NaOH .
XII U13-Organic Nitrogen XII U13-Organic Nitrogen - - - - R NH + H - OH .. R NH + OH - basicity constant K b = R-NH R-NH