Table : Calculated values of Keq for Acetic Acid at 25°C at Various Concentrations [m (CH3COOH) = 390.7 -1cm2mol-1 and Table : Calculated Values of Keq for KCl at 25°C at Various Concentrations
Table : Calculated values of Keq for Acetic Acid at 25°C at Various
Concentrations [m
(CH3COOH) = 390.7 -1cm2mol-1
|
C/mol
dm-3
|
-1cm2 mol-1
|
|
Keq
= mol dm-3
|
|
0.001
0.005
0.01
0.05
0.10
|
48.63
22.80
16.20
7.36
5.20
|
0.12450
0.05835
0.04150
0.18840
0.01331
|
1.77
x 10-5
1.81
x 10-5
1.80
x 10-5
1.81
x 10-5
1.80
x 10-5
|
Table : Calculated Values of Keq for
KCl at 25°C at Various Concentrations
|
C/mold
m-3
|
-1cm2
mol-1
|
|
Keq
= C2/ mol dm-3
|
|
0.001
0.005
0.010
0.05
0.10
|
147.0
143.6
141.3
133.4
129.0
|
0.981
0.958
0.943
0.890
0.861
|
0.0506
0.1093
0.1561
0.3600
0.5330
|
From Table , it is clear that Ostwald’s
dilution law does not hold in the case of strong electrolytes. The only
conclusion to be drawn is that for strong electrolytes m / is not
equal to the degree of ionization. In the case of strong electrolytes m m/
is actually a measure of the variation of ionic speed with concentration. For
this reason it is preferable to call this ratio the conductance ratio.
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