of certain Chemical Actions, etc. 



279 





Change of 





Time in hours 



Conductivity 

 xlO 5 



k 



19-6 



974 



43-5 



22 



1077 



43-4 



28-5 



1350 



43-7 



46 



1992 



42-8 



73-1 



2708 



41-0 



97-5 



3274 



40-8 



141-8 



3970 



40-2 



169-7 



4283 



39-5 



193-7 



4576 



41-2 



215-8 



4723 



40-6 



And also for the experiment in which initially hydrochloric 

 acid was present (Fig. 4). 



a =15600. 





Change of 





T 



Conductivity 

 xlO 6 



* ' 



21-25 



2695 



38-7 



22-5 



2987 



41-0 



24-8 



3246 



41-6 



45-25 



5487 



41-7 



49-3 



5878 



41-8 



92-75 



9207 



41-8 



100-2 



9627 



41-7 



121-4 ' 



10667 



41-0 



145-6 



11770 



42-0 



165-4 



12490 



42-5 



The values of the constants obtained are practically the same 

 as those found in the first experiment, the results of which are 

 represented in Fig. 1. 



We see therefore, as we should expect, that the velocity constant 

 is not dependent on the strength of the solution, and also that the 

 presence of additional hydrochloric acid does not alter appreciably 

 the velocity constant. 



