OF AQUEOUS SOLUTIONS.—BARNES. i | 
Determinution of the Ionization Constants. 
Table IV gives the values of the ionization constants (k and 
1) determined by the method of least squares from the data 
given in Tables III and V, the observed values of the viscosity 
of the four solutions of each salt being used. The relative 
magnitude and the sign of the ionization constants would seem 
to show that the undissociated molecules exert the greater 
influence in increasing the viscosity, while the free ions have 
in some cases a diminishing effect. 
TABLE! EV. 
Electrolyte. k. | EE 
| 
Na Cl. +0.11213 + 0.089765 
Ke@l +0,30645 | — 0.12289 
Ba Cle. +0.20327 | +.0.061009 
4K, SO,. | +0.21347 + 0.0088236 
4 Na, SO,. + 0.30418 + 0.13348 
4Cu SO,. | + 0.46500 — 0.058144 
Results of Calculations on Simple Solutions. 
Table V gives a comparison of the caleulated and observed 
values of the viscosity of simple solutions, the calculated values 
being determined by expression (1) with the ionization coefh- 
cients and ionization constants, as given in the above tables. In 
this table all the viscosity results are relative to water at 25°C., 
and the concentrations are expressed as in Table I. 
AANA, WA 
WAISCOSIT Ss An 250 C: 
Concentration. Observed Value. | Calculated Value. ! Difference. 
Na Cl. (Reyher.) 
1.0 | 1.0973 1.0971 S052 
0.5 | 1.0471 1.0479 +0.038 
0.25 1.0239 | 1.0236 =0.053 
0.125 1.0126 | 1.0117 ~0.039 
