Cacid = 0.2 M (40.07 g/dm3)

 

Cacid = 0.5  M (100.17 g/dm3)

10-4
(mol-g /dm3 )

[Cu]10-4
(mol-g /dm3)

D’

%E

pH

 

10-4
( mol-g /dm3 )

[Cu]10-3
(mol-g /dm3)

D’

%E

pH

0.866

4.14

0.21

17.3

4.56

 

0.775

4.23

0.18

15.5

4.17

1.15

3.86

0.30

22.9

4.59

 

1.07

3.93

0.27

21.5

4.22

1.58

3.42

0.46

31.6

4.67

 

1.70

3.30

0.52

34.1

4.30

2.01

2.99

0.67

40.1

4.70

 

1.98

3.06

0.65

39.6

4.34

2.21

2.80

0.79

44.1

4.74

 

2.55

2.45

1.04

51.0

4.42

2.27

2.73

0.83

45.4

4.76

 

3.87

1.13

3.43

77.4

4.63

2.96

2.04

1.46

59.3

4.86

 

4.24

0.759

5.59

84.8

4.72

3.72

1.28

2.90

74.4

4.96

 

4.62

0.386

12.0

92.3

4.88

4.03

0.975

4.13

80.5

5.03

 

4.72

0.284

16.6

94.3

4.95

4.86

0.147

33.1

97.1

5.47

 

4.88

0.119

40.9

97.6

5.16

Table 3: Equilibrium data of (CuSO4 + lauric acid + benzene) at 298.2 K. Ccu,initial = 510-4 M (0.0318 g/dm3) , CNa2SO4 = 0.1 M (14.204 g/dm3).