General Discussion of Results . 
431 
Table XXXI. 
Values of a. 
Salt. 
Per cent, in 
ethyl alcohol. 
From boiling 
point. 
From conduc¬ 
tivity. 
LiCl 
0.9 
0.35 
0.32 
CH 3 COOK 
1.07 
0.18 
0.27 
KI 
0.78 
0.29 
0.49 
AgNO s 
0.533 
0.65 
0.38 
Nal 
2.14 
0.27 
0.45 
Nal 
0.68 
0.51 
0.56 
CH 3 COONa 
0.97 
0.01 
0.24 
It is to be remembered that these two sets of values are cal¬ 
culated from results obtained at different temperatures; in the 
case of the conductivity measurements at 18° C., where the 
viscosity factor is about 0.01211, and in the other case at 78° 
when that factor had decreased (at 70° to 0.00521). Yet it will 
be seen that there is no regularity of the results and that the 
degree of dissociation according to the boiling point determina¬ 
tions is not invariably higher than that obtained by the con¬ 
ductivity method. It is no doubt but proper to ask, which of 
these methods gives the correct measure of the amount of dis¬ 
sociation of the dissolved substance. 
In propyl alcoholic solutions the boiling point method gives 
nearly normal values for the molecular weights of the dissolved 
substances. In the case of lithium salicylate, however, a double 
molecular is indicated; and it is only in the case of solutions 
of this salt, that the values for ^ appear to approach a limiting 
value. (See Plate V.) The results of a few of the molecular 
weight determinations made by Schlamp are given in the follow¬ 
ing tables: 
Table XXXII. 
Salicylate of Lithium. Sodium Iodide. Lithium Chloride. 
Mol. Wt. = 144. Mol. Wt.= 150. Mol. Wt. = 42.5. 
Per cent. 
Content. 
Mol. Wt. 
Per cent. 
Content. 
Mol. Wt. 
Per cent. 
Content. 
Mol. Wt. 
1.97 
260 
3.09 
144.8 
0.182 
36.19 
2.16 
273.3 
5.09 
146.1 
4.05 
48.95 
4.86 
252.5 
7.60 
140.1 
4.57 
45.40 
10.30 
273.4 
14.02 
150.5 
5.0 
42.3 
15.45 
288.9 
