Cacid = 0.2 M (40.07 g/dm3)

 

Cacid = 0.5 M (100.17 g/dm3)

(mol /dm3 )


( mol /dm3 )

D'

%E

pH

 

(mol /dm3 )


( mol /dm3 )

D'

%E

pH

0.309

4.69

0.07

6.2

4.05

 

0.148

4.85

0.03

3.0

3.57

0.422

4.58

0.09

8.4

4.08

 

0.293

4.71

0.06

5.9

3.65

0.603

4.40

0.14

12.1

4.12

 

0.463

4.54

0.10

9.3

3.71

1.35

3.65

0.37

27.0

4.25

 

0.536

4.47

0.13

11.3

3.74

2.35

2.66

0.88

47.0

4.38

 

1.47

3.53

0.42

29.4

3.89

2.40

2.60

0.92

48.0

4.39

 

1.89

3.11

0.61

37.8

3.94

2.49

2.51

0.99

49.8

4.40

 

2.10

2.91

0.72

42.0

3.97

3.12

1.88

1.66

62.4

4.48

 

2.55

2.46

1.04

51.2

4.03

3.34

1.66

2.04

67.2

4.52

 

3.15

1.85

1.70

63.0

4.12

3.64

1.36

2.68

72.8

4.57

 

3.80

1.21

3.14

76.0

4.22

4.24

0.762

5.56

84.8

4.72

 

4.83

1.69

25.6

96.7

4.68

4.63

0.370

12.5

92.6

4.89

 

4.99

1.22

396

99.7

5.24

Table 5:Equilibrium data of (CuSO4 + lauric acid + benzene) at 298.2 K. Ccu,initial = 510-3 M (0.3177 g/dm3) , CNa2SO4 = 0.1 M (14.204 g/dm3).