pH
[Cu]
aq
x 10
-3
(mol/l)
[Cu]
org
x 10
-3
(mol/l)
D
%E
4.9
1.33
0.23
0.17
14.73
5.1
1.10
0.46
0.42
29.78
5.2
0.94
0.62
0.66
39.81
5.29
0.78
0.78
0.99
49.84
5.39
0.62
0.94
1.49
59.87
5.5
0.47
1.09
2.32
69.90
5.6
0.31
1.25
3.98
79.93
5.7
0.23
1.33
5.64
84.95
Table 5:
The distribution coefficient (D) and extraction percentage (%E) for extraction of copper (II) with lauric acid (0.04M) diluted in 1-octanol. [Cu]
aq.initial
= 1.57x10
-3
M.
