PSPM Tutorial

9. (a)i) U: CH3CH(OH)CH3

V:

O CH CH3
CH2 C O CH3

X : CH3COCH3 O CH CH3
ii) CH2 C O CH3

O
CH2 C OH

CH3CH(OH)CH3 , H3O+


V

OH I2 , OH- O
H3C CH CH3
+H3C C O- CHI3
U
W

OH KMnO4 , H+ O

H3C CH CH3  H3C C CH3

UX

iii) triiodomethane

(b) Methanoic acid can react with Tollens’ reagent because of presence of aldehyde
functional group. Whereas ethanoic acid does not have aldehyde functional group.

O Ag(NH3)2+ , OH- CO2 + H2O + Ag
H C OH

10. (a) i) AA : conc. HNO3 , conc. H2SO4 , 50-55oC
CC : NaNO2 , HCl , 0-5oC

NH2

BB:

DD: N N OH
ii) Coupling reaction

(b) Name of test: Identification test of aniline

Reagent : Br2 (aq) @ Bromine water

Observation:

N-methylamphetamine : No white precipitate formed.

Aniline : White precipitate formed

Equation :

NH2 NH2

Br2 (aq) Br Br

Br

11. (a) Amino acid such as serine are amphoteric because functional group amino (NH2)
acts as base and functional group carboxyl (COOH) acts as acid.

(b)

O
O

C NH2 HCl C + Cl-
HO CH
NH3

HO CH

CH2 CH2

OH OH

O NaOH (aq) O
C NH2 C NH2
HO CH NaO CH

CH2 CH2
OH OH

12. Monomers: O
C Cl
O

H2N NH2 and Cl C

O @
HO C
O
C OH