TO THEIR STATE OF IONIZATION—-MACGREGOR. 233 
Molecular Concentrations of Corresponding and Isohydric 
Solutions. 
NaCl. KCl. 
Values between : : 
er rag eee gees Value assigned Isohydric 
which curves may) ‘hy Observer. Solution. 
be in contact. 
CONDUCTIVITY (BENDER’S OBSERVATIONS). 
0.5 0—1.0 0.375 0.47 
1 O—1.1 0.75 0.89 
2 1.2—1.5 1.5 1.60 
3 1.8—2.55 2.25 2.20 
4 2.6—3.15 3.0 2.57 
VISCOSITY (BRUCKNER’S OBSERVATIONS). 
1.0 1.2 
2.0 2.6 
The fourth column of the above table gives approximate 
values of the concentration of the solutions of KCl (obtained 
from Kohlrausch’s data) which are isohydric with the solutions 
of NaCl in the first column; and it will be noticed that in most 
cases these values are within the limits within which Bender’s 
and Briickner’s curves must be regarded as being possibly in 
contact. 
It would thus appear that both Bender and Briickner drew 
too definite conclusions from their observations, and that the 
observations themselves are not inconsistent with the applicabil- 
ity of expression (1) to the physical properties of solutions. 
APPLICATIONS OF THE ASSUMED LAW OF IONIZATION-CONSTANTS., 
RATIO AND DIFFERENCE OF THE VALUES OF A PROPERTY 
FOR SOLUTION AND SOLVENT. 
If the expression under consideration is applicable to solu- 
tions of moderate dilution it should give by deduction the laws 
which have been found to hold for particular properties of such 
