Explain why amines are less acidic than alcohols of comparable molecular masses.

i) Amines are less acidic than alcohols of comparable molecular masses because NH bond is less polar than O-H bond. Hence amines release H⁺ ion with more difficulty compared to alcohol.
ii) Loss of proton from amines gives an amide ion while loss of a proton from alcohol gives\ an alkoxide ion.
$\mathrm{R}-{\mathrm{NH}}_2\to \mathrm{R}-{\mathrm{NH}}^{-}+{\mathrm{H}}^{+}$
$\mathrm{R}-\mathrm{O}-\mathrm{H}\to \mathrm{R}-{\mathrm{O}}^{-}+{\mathrm{H}}^{+}$
R–O^– is more stable than R–NH^–, thus alcohols are more acidic than amines