Hypothesis of Ionic Dissociation, 



463 



hypothesis and it is encouraging to find that it is being- 

 recognized. In the case of the hydrolysis o£ ethereal salts 

 and of cane-sugar, although the two properties are altered in 

 different directions by alterations o£ concentration, Acree 

 and Stieglitz, two of the chief workers on the subject of 

 hydrolysis, evidently imagine that they run parallel, as they 

 repeatedly state in emphatic terms that the rate of hydrolysis 

 is proportional to the concentration of the hydrogen ions. 



Table I. 



Molecular Proportions 



Molecular hydrolytic 



Degree of "ionization" 



H.,0 : HOI. 



activity of acid. 



i£ 







^00 



I 



1 n 







30 



385 



0725 



40 



323 



0-778 



50 



290 



0813 



60 



269 



0-837 



80 



243 



0-859 



100 



229 



0-871 



200 



201 



0-901 



Table II. 





Dilutions (Mols. H 2 0). 



K;. 



K wl . 



30: 60 



30: 80 

 30 : 100 

 30 : 200 



100 

 94 

 91 



98 



1136 

 1154 

 1160 

 1143 



40: 80 

 40 : 100 



40 : 200 



104 



99 



103 



1092 

 1110 

 1095 



50: 80 

 50 : 100 

 50 : 200 



99 



92 



101 



1121 

 1145 

 1112 



60 : 100 

 60 : 200 



77 

 96 



1254 

 1159 



«0 : 100 

 80 : 200 



79 

 102 



1245 

 1102 



100 : 200 



109 



1042 



Mean 



96 



1138 







212 



