Diffusion of Electrolytes and Non-electrolytes in Aqueous Solutions: A Useful Strategy for Structural Interpretation of Chemical Systems - Progress in Organic and Physical Chemistry: Structures and Mechanisms - page 46

( ) ( )

XD

0

− X D

0

1

1 + 1 +

D 2 D

complex K

0
11

(22) ( cc / = 0) =

1 2

-

( ) ( )

DX + D

0

− X D

0

Cl

1

−

1 + 1 +

complex K

Cl

( ) ( )

XD

0

− X D

0

1

1 + 1 +

D 2 D

0
11

complex K

( cc / = 0) = (23)

-

1 2

( ) ( )

DX + D − X D

0 0

Cl 1

−

1 + 1 +

complex K

Cl

4.4 CONCLUSION
The study of diffusion processes of electrolytes and non-electrolytes in aqueous solu-
tions is important for fundamental reasons, helping to understand the nature of aque-
ous electrolyte structure, for practical applications in fields such as corrosion, and
provide transport data necessary to model diffusion in pharmaceutical applications.
Although no theory on diffusion in electrolyte or non-electrolyte solutions is capable
of giving generally reliable data on D , there are, however, estimating purposes, whose
data, when compared with the experimental values will allow us to take off conclu-
sions on the nature of the system.

KEYWORDS

• Aqueous solutions

• Diffusion coefficients

• Electrolytes

• Non-ionic solutes

• Transport properties

REFERENCES
1. Agar, J. N. and Lobo, V. M. M. J. Chem. Soc. , Faraday Trans. I, 71 , 1659-1666 (1975).
2. Lobo, V. M. M. Handbook of Electrolyte Solutions . Elsevier, Amsterdam (1990).
3. Lobo, V. M. M., Ribeiro, A. C. F., and Veríssimo, L. P. J. Chem. Eng. Data , 39 , 726-728 (1994).
4. Ribeiro, A. C. F., Lobo, V. M. M., and Natividade, J. J. S. J. Chem. Eng. Data , 47 , 539-541
(2002).
5. Valente, A. J. M., Ribeiro, A. C. F., Lobo, V. M. M., and Jiménez, A. J. Mol. Liq ., 111 , 33-38
(2004).
6. Ribeiro, A. C. F., Lobo, V. M. M., Oliveira, L. R. C., Burrows, H. D., Azevedo, E. F. G., Fangaia,
S. I. G., Nicolau, P. M. G., and Guerra, F. A. D. R. A. J. Chem. Eng. Data , 50 , 1014-1017 (2005).
7. Ribeiro, A. C. F., Lobo, V. M. M., Valente, A. J. M., Simões, S. M. N., Sobral, A. J. F. N., Ramos,
M. L., and Burrows, H. D. Polyhedron , 25 , 3581-3587 (2006).
8. Ribeiro, A. C. F., Esteso, M. A., Lobo, V. M. M., Valente, A. J. M., Sobral, A. J. F. N., and Bur-
rows, H. D. Electrochim. Acta , 52 , 6450-6455 (2007).
9. Ribeiro, A. C. F., Costa, D. O., Simões, S. M. N., Pereira, R. F. P., Lobo, V. M. M., Valente, A. J.
M., and Esteso, M. A. Electrochim. Acta , 55, 4483-4487 (2010).
10. Ribeiro, A. C. F., Esteso, M. A., Lobo, V. M. M., Valente, A. J. M., Simões, S. M. N., Sobral, A.
J. F. N., Ramos, L., Burrows, H. D., Amado, A. M., and Amorim da Costa, A. M. J. Carbohydr.
Chem. , 25 , 173-185 (2006).