Concentration in er 
( 90 ) 
CANE SUGAR. 
Pw ps pm (popups N 
mol per 1000 gr. H Kol in m.m. He. in mm. He. | Na Pe Pa 
0.02138 | 0.00178 | 0.083 1.0 
0,04630 | 0.00388 0.084 L.O 
0.08488 0.00705 0.083 WA) 
0.17287 | 0.01440 0.083 1.00 
0.28340 0.02366 0.084 1.00 
0.77912 0.06485 0.083 1.001 
1.8821 0.174538 0.093 1135 
For NaCl and KO H-solutions I found that the molecular depression 
of the vapour tension, and so 7, became greater, when the concen- 
tration increased. For cane sugar solutions the molecular depression 
of the vapour tension and so 7, was found constant between the 
concentration 0,02138 and 0.77912 gr. mol. per 1000 gr. H,O. 
Only for the last concentration 1.8821 gr. mol. per 1000 gr. H,O 
a higher value was found for the mol. depression of the vapour ten- 
sion and for i than for the other concentration. 
The results of the observations with the improved manometer 
follow. As the determination of the course was my principal object, 
I chose some solutions with a great difference of concentration. 
Na Cl 
| 
Concentration in gr. Pw—ps pu | j— Boats N 
mol per 1000 gr. HO. in m.m. Hg. | in mm, Hg. | Pi AE 
| | 
0.033028 0.00435 0.132 1.6 
0.34057 | 0.04793 | 0.141 1.69 
| } 
1,7533 | 0.25724 0.147 1.764 
| | 
221927 | 0.33406 | 0.153 1.832 
| 
1.6362 | 0.78345 | 0.169 2.032 
OH 
Concentration in gr. | Pw—ps pm _ Pops N 
mol. per 1000 gr. Hs 0 in mm. Hg. | in mm. Hg. po a 
0.03476 | 0.00470 0.135 | 1.6 
0.42374 (). 06454 0.152 | 1.83 
1.1912 | 0.19505 0. 164 | 1.969 
2.5995 0.45440 0.186 2.241 
' q 
den ih 2: ell 
