( ^40 ) 



T A ]^ L E VII. 



Fro)n the determinations of the vapour tension at 0"^ 

 with Lord Rayleigh's manometer. 



Concentration. 



0.051.") 

 0.0901 

 ;$385 

 0.8328 



Degree of 

 Dissociation 



K = ^ 



1 — t 



0.7t> 

 0.08 

 0.03 

 0,59 



0.09 

 0.10 

 0.35 

 0.72 



From the determinations of the boiling point at ± 100°. 



TAB L E Till. 

 KNO„. 



Fnitii the (lot('rminati(Mis of the vapour ten.sion at 0° with th,- 

 aniline-water-manometer. 



From the determinations of the boiling point at i 100°. 



1) We mn.?t not attach too much importance to ihe absolute value of K, as a 

 slight error in tlie sensibility of the manometer appears in K greatly magnified. 



3) By this method Ave cannot make use of more diluted solutions to test the 

 dilution-law, as the error of the observation has too much influence then. For the 

 concentration 0.1 gr. mol. per 1000 gr. HoO this influence is already fairly strong. 

 If e.g. for this concentration we had lound a rise of the boiling point of 0.1° 

 instead of 0.099\ we should have had a = 0.93 and A' =1.23.. 



