KINETICS OF CERTAIN SILVER SALTS 287 



ferent silver salts. The molecular concentration (gram-mole- 

 cules in the liter) m, was calculated from the percentage com- 

 position as found by analysis, and the specific gravity de- 

 termined at 18, although this barely differed from that of 

 water. There was no appreciable contraction when additional 

 water was added for dilution; but a proper correction was 

 made for the conduction by the water itself, which was found 

 to be 2.5 X10" 10 . 



Ag(C 2 H 5 S0 4 ) Ag(C 8 H 6 SO s ) 



846 



905 874 

 930 897 

 943 900 

 949 906 



m X X 108 at 25 



Ag(C 8 H n S0 3 ) Ag(C 10 H 7 S0 3 ) AgC 2 H 3 O 3 Ag 2 S 2 O fl Ag 2 SiFl, 



0-025 734 ... ... 1253 995 



0-015 762 882 ... 1343 1020 



007 791 893 897 1383 1054 



0-003 813 926 926 1442 1081 



0-0015 826 941 944 1474 1096 



0-0008 836 951 949 1505 1100 



[118] Ostwald has found 1 that the sodium salts of numerous 

 monobasic acids have almost identically progressing coeffi- 

 cients of activity; the same regularity may be observed in the 

 present series. The ratios of the conductivity of a salt in va- 

 rious states of dilution agree, for the silver salts of the mono- 

 basic acids, within limits that scarcely transcend the probable 

 errors of observation. We shall utilize this fact in finding 

 the limit of the conductivity for extreme dilution; for, at 

 the concentration 0.0008, the dissociation of the molecules 

 is not yet complete, although very nearly so. If we re- 

 member that, according to Kohlrausch's measurements, when 



1 Ostwald, Zeitschr. 2, 847. 



