22
Fig. 1.18. A sketch of the electrostriction region around an ion
~
:;:
~
So
0
-20
-40
-60
- 80
- 100
M+
~" "'"
~" '"
Bel+
o
M~+
"
(r3+
~"""q)el+
Ln3+
0'
Th4+
F. J, Millero
o
A13+
_120L' __ L-~ __ -L __ ~ __ L-~ __ -L __ L-~L-~ __ J
or
-20
~
-40
~
So -60
- 80 tI
- 100
-120
o 2 4 6 8 10 12 14 16 18 20
Plrl
M+
~
Bel+
M2+
"- 0
" Th4+
0
2
4
6
8
10
P/(r + 0,85)
The ion-ion interactions can be examined using
1. Debye-Hiickel Theory
2. Ion Pairing Theory
3. Friedman Cluster Expansion Theory
The Debye-Hiickel Theory as with the Born Model considers the solution to be a
dielectric medium. The free energy or activity coefficient (y) changes are related to
the changes in the ionic strength:
Fig. 1.18. A sketch of the electrostriction region around an ion
~
:;:
~
So
0
-20
-40
-60
- 80
- 100
M+
~" "'"
~" '"
Bel+
o
M~+
"
(r3+
~"""q)el+
Ln3+
0'
Th4+
F. J, Millero
o
A13+
_120L' __ L-~ __ -L __ ~ __ L-~ __ -L __ L-~L-~ __ J
or
-20
~
-40
~
So -60
- 80 tI
- 100
-120
o 2 4 6 8 10 12 14 16 18 20
Plrl
M+
~
Bel+
M2+
"- 0
" Th4+
0
2
4
6
8
10
P/(r + 0,85)
The ion-ion interactions can be examined using
1. Debye-Hiickel Theory
2. Ion Pairing Theory
3. Friedman Cluster Expansion Theory
The Debye-Hiickel Theory as with the Born Model considers the solution to be a
dielectric medium. The free energy or activity coefficient (y) changes are related to
the changes in the ionic strength: