294 



COLLOIDS AND ELECTROLYTES 



the acidulated CaCl2 solution upon the initial rate of diffusion of 

 water into the solution. 



o 



^ 



5^ 



(^ 



300 

 280 

 260 

 240 

 220 

 200 

 180 

 160 

 140 

 120 

 - 100 

 ^ 80 



60 



40 



20 







M M M M M M M M M 

 4000 2000 1000 500 250 125 62 31 15 



Concentration of salt added 



Fig. 15. m/512 AI2CI6 separated from water by collodion bag. Depressing' 

 effect of addition of salt to m/512 AI2CI6 upon the initial rate of diffusion of water 

 into the bag. SO4 depresses more than NO3 or CI. 



In all the experiments mentioned the electrolyte was added not 

 only to the inside but also to the outside solution. It is hardly 

 necessary to state that the depressing effect is also well marked 

 if the electrolyte is added only to the solution inside the collodion 

 bag, while on the outside is distilled water. 



