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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