34 
What we observe is therefore the superposition of a positive and 
negative effect, the decrease of the dissociation constant of water 
predominating in this case. 
Repetition of the experiment of May 25'® 1916, but now with 10 °/, 
alcohol, gave on May 30 the result, summarised in figure 7. With- 
out alcohol was found m = 0,00326, with 10 °/, aleohol m= 0,00267. 
The electrometric estimation of the py in 8 °/, phosphate solutions 
with 10°/, aleohol had given: 
with 10°/, alcohol 7,13 io 
without alcohol 6,89 1,29 
difference 0,24 0,24 
Thus a constant rise of 0,24, which means a change in A from 
10-1378 to 10-1426, 
Figure 8 shows, together with the original curve of fig. 1 the 
curve B, calculated for 
4828 
12364 NOS reed Ol 08 
+ (Hf 
(#7) . kw 
with the value 10-142 for &,,. 
The results of this calculation are represented by column 3 of the 
following table. 
inde 
TABLE 19. 
PH 108 Cor m | m (for Ae 20 0/5 
| 
8.13 14.13 | 41 46.8 
8.03 58.88 44 8 51.4 
1.80 34.67 50.8 59.— 
1.64 23.99 50.3 58.3 
1.52 18.20 41.4 54.7 
feel 8.90 36.1 40.7 
1. 5.495 29.8 32.7 
6.67 2.57 let 281 25.— 
6.40 1.38 21 == 21.8 
8.5 173.8 29.2 ove 
§.— 1660.— 21.6 22.5 
