50 



Prof. R. A. Lebfeldt on the 



Alcohol and Toluene. 



Per cent. 



Mol. per cent. 



Saturation press. 



d (log p) 



alcohol. 



alcohol. 



i> 50 - 



dt 











930 



00189 



214 



4-20 



141-2 





9-74 



1775 



214-8 



178 



18-26 



30-89 



2331 



193 



29-98 



4613 



2421 



193 



40-50 



57 65 



244-2 



195 



5015 



66-80 



249-2 





61-65 



7627 



248-2 





7195 



83-69 



244-4 





78-60 



88 02 



2430 





92-29 



95-99 



230-9 





100 



100 



219-5 



209 



III some of the above cases the temperature-coefficient was 

 not found from experiment, but p 50 derived from the additive 

 value of it ; therefore no number is recorded in the last 

 column. 



Carbon Tetrachloride and Benzene. 



Per cent. 



Mol. per cent. 



1 



d(\ogp) 



CC1 4 . 



CC1 4 . 



Pso- 



dt 











2709 



0-0164 



26-97 



1578 



281-0 



162 



46-32 



3044 



290 



163 



75-75 



61-31 



302 3 



161 



100 



100 



310-2 



156 



These two liquids have so nearly the same vapour-pressure, 

 and the curve between them is so nearly straight, that three 

 observations were considered enough. 



Carbon Tetrachloride and Toluene. 



Per cent. 



Mol. per cent. 





d (log p) 



CC1 4 . 



CCI 4 . 



PoQ' 



dt ' 











930 



00189 



6-52 



3-99 



99 



183 



20-75 



1351 



117-9 



174 



34-61 



2401 



1408 



173 | 



52 40 



39-70 



174-8 



170 



63 93 



51-42 



197-7 



167 



74-47 



63-51 



226-5 



169 



82-64 



73-98 



248-5 



163 



9444 



90-99 



288-8 



156 



100 



1U0 



310-2 



156 



