pH
[Cu]
aq
x 10
-3
(mol/l)
[Cu]
org
x 10
-3
(mol/l)
D
%E
4.71
1.18
0.38
0.32
24.77
4.78
1.10
0.46
0.42
29.78
4.87
0.94
0.62
0.66
39.81
4.92
0.86
0.70
0.81
44.83
4.96
0.78
0.78
0.99
49.84
5.01
0.70
0.86
1.21
54.86
5.07
0.62
0.94
1.49
59.87
5.14
0.55
1.01
1.84
64.89
5.19
0.47
1.09
2.32
69.90
5.29
0.31
1.25
3.98
79.93
5.44
0.15
1.41
8.96
89.96
Table 3:
The distribution coefficient (D) and extraction percentage (%E) for extraction of copper (II) with lauric acid (0.04M) diluted in toluene. [Cu]
aq.initial
= 1.57x10
-3
M.
