pH
[Cu]
aq
x 10
-3
(mol/l)
[Cu]
org
x 10
-3
(mol/l)
D
%E
4.66
1.18
0.38
0.32
24.77
4.71
1.10
0.46
0.42
29.78
4.75
1.02
0.54
0.53
34.80
4.82
0.94
0.62
0.66
39.81
4.86
0.86
0.70
0.81
44.83
4.91
0.78
0.78
0.99
49.84
4.94
0.70
0.86
1.21
54.86
4.99
0.62
0.94
1.49
59.87
5.03
0.55
1.01
1.84
64.89
5.13
0.39
1.17
2.98
74.92
5.24
0.23
1.33
5.64
84.95
Table 2:
The distribution coefficient (D) and extraction percentage (%E) for extraction of copper (II) with lauric acid (0.04M) diluted in dichloromethane. [Cu]
aq.initial
= 1.57x10
-3
M.
