Section 1.1 Section 1.2 Section 1.3 - The Student Room

SECTION 13
Section 13.9
1 a H R
O
H C C O –
N +
H
H
b
i
CH 3 CH 3
+ HCl Cl – H 3 N + CH COOH
H 2 N
CH
COOH
ii
CH 2 OH
CH 2 OH
H 2 N
CH
COOH
+ NaOH H 2 N CH COO – Na +
+ H 2 O
iii
+
(CH 2 ) 4 NH 3 Cl –
(CH 2 ) 4 NH 2
+ 2HCl Cl – H 3 N + CH COOH
H 2 N
CH
COOH
iv
CH 2 COOH
H 2 N
CH
COOH
CH 2 COO – Na +
+ 2NaOH H 2 N CH COO – Na + + 2H 2 O
2
O
H 2 N CH C OH
CH
CH 3
O
CH 3
H 2 N CH C OH
3 a
O
O
O
O
CH 3
H 2 N CH C N CH 2 C OH
CH 3
H 2 N CH C OH
+ H 2 O
C
OH
CH 3
CH 2
+ H 2 N
H
The salts will be formed in the presence of HCl(aq), for example
O
O
+
Cl – H 3 N CH 2 C OH
b
OH
CH 2
O
O
H2N CH C N
C OH
H
CH 2
H 2 N CH C
+ 2OH –
OH
CH 2
CH 2
O
O
C O – + H 2 N O – + H 2 O
c Key points which should be included are: correct choice of solvent; the container used for
the separation should have a lid; authentic samples of the amino acids used alongside the
reaction mixture; R f
values carefully measured.
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