1073 
TABLE III. 
As in table I, temperature = 40° 
| (a—x)105 Ki 
0 je, ane: 
30 61.6 — 
90 523 | 0.00273 
165 43.1 | 0.00251 
.. &+ 10 ER 
The proportion ES = + 2,5, is therefore normal. 
4 t 
Injluence of the concentration. 
KRAB EE IV. 
As in table I. Concentration of AlCl3z as well as of BrCgH4yS9.Cl =0.2 n 
(The expression 1/,(a—x)103 indicates the percentages 
of the acid chloride originally present. 
| 1/,(a—2)103 Ky 
0 u 366 | = 
120 28.1 | 0.00220 
300 19.6 | 0.00208 
| 
| 0.00169 
540 | 14.7 
The much more rapid progress of the reaction compared with that 
of the N/10 concentration was shown by the fact that after scarcely 
a quarter of an hour, which is the time required to obtain a homo- 
geneous solution, more than 65 °/, of the original quantity had already 
been converted. 
The constant for the M/S concentration is twice that of the 
N/10 concentration. 
We should conclude from this, that the entire course of the reac- 
tion can be represented by the reaction: 
da 
ze =kC aici, (a—*2) 
that is to say, of a monomolecular reaction influenced catalytically, 
i 108 
