Answer:
(i) In tertiary
amines there are no acidic hydrogen due to which it do not undergo acylation
reaction.
(ii) Basic
strength in aqueous solution is determined by three factors - Inductive effect,
solvation effect and steric factor. Inductive effect favours 3° amine,
solvation effect favours 1° amine and steric factor favours 1° amine. So, over
all basicity is : 2° > 3° > 1°.
(iii) N being
less electronegative than O gives lone pair of electron more easily than O
atom. Therefore amines are more basic than alcohols.
Basicity is decided by three
factors :
(i) Inductive
effect.
(ii) Solvation
effect.
(iii) Steric
factor.
Electron
releasing group increases the electron density on nitrogen atom that increases
its basic strength. So, the order is 3° > 2° > 1°.
Now in aqueous
solution 1° amine forms 3 hydrogen bond 2° amine forms two hydrogen bond and 3°
amine forms one hydrogen so, the stability of ions by solvation and hence
basicity should follows a trend 1° > 2° > 3° and due to steric reason 2°
amine is more basic than 1°.
You need to login to perform this action.
You will be redirected in
3 sec