pH
[Cu]aqx 10
-3
(mol/l)
[Cu]org x 10
-3
(mol/l)
D
%E
4.53
1.25
0.31
0.24
19.75
4.60
1.18
0.38
0.32
24.77
4.70
1.02
0.54
0.53
34.80
4.79
0.86
0.70
0.81
44.83
4.84
0.78
0.78
0.99
49.84
4.93
0.62
0.94
1.49
59.87
5.04
0.47
1.09
2.32
69.90
5.15
0.31
1.25
3.98
79.93
5.27
0.15
1.41
8.96
89.96
Table 1:
The distribution coefficient (D) and extraction percentage (%E) for extraction of copper (II) with lauric acid (0.04M) diluted in cyclohexane. [Cu]
aq.initial
= 1.57x10
-3
M.
