PAPERS ON CHEMISTRY AND PHYSICS 



255 



soLrxE — V APHT H ^T. rvF — Concluded. 



Slope of the Experi- 



log N vs. mental slope 



Solvent 1 T curves Ideal slope 



Benzene 1020 1 . 05 



Toluene 1030 1 . 06 



Phthallc anhydride 1040 1 . 07 



Carbon disulfide 1050 l.OS 



Pyridine 1060 1.08 



Ethyl acetate 1160 1 . 20 



Ether IISO 1 . 22 



Thymol 1200 1 . 24 



Acetone 1260 1 . 30 



Para toluidine 1270 1 . 31 



Alpha naphthylamine 1270 1 . 31 



Alpha naphthol 1310 1 . 35 



Aniline 1430 1 . 47 



Phenol 1700 1 . 75 



Hexane 1740 1 . 80 



.SOLrXE — FLrOREXE. 



Ideal solvent 1050 1 



Chlorbenzene 1060 1 . 01 



Nitro benzene 1090 1.04 



Benzene IISO 1.12 



Pyridine 1200 1.14 



Carbon disulfide 1210 1 . 15 



Carbon tetrachloride 1320 1.25 



Aniline 1510 1 . 44 



Acetone 15S0 1.50 



SOLtTB — BENZOIC ACID. 



Ideal solvent 900 1 



Acetone 940 1 . 04 



Benzil 940 1.04 



Acetophenone 940 1 . 04 



Phenol 1190 1 . 32 



Nitro benzene 1200 1.33 



Toluene 1370 1 . 52 



Benzene 1380 1.53 



Acetic acid 1460 1 . 62 



Carbon tetrachloride 1530 1.70 



SOLrXE — rRETHAXE. 



Ideal solvent 795 1 



Methyl alcohol 925 1 . 17 



Acetamid 950 1 . 19 



Acetanilid 950 1.19 



Ethyl alcohol 1060 1 . 33 



Probyl alcohol 1200? 1.5i>-1.75 



Amyi alcohol 1500 ? 1 . 7-5-2 . 00 



Water 2000? 2.2-5- 



Toluene 2600? 3.0t>- 



Factor 

 taken 

 from Fig. 1 

 1.06 

 1.07 



09 

 11 

 ,10 

 ,19 

 29 



1.30 

 1.33 

 1.35 

 1.32 

 1.40 

 1.45 



SO 



1 



1.01 



1.04 



1.10 



1.10 



1.12 



1.22 



liii 



1.37 



1 



1.04 



1.04 



1.04 



1.35 



1.34 



1.47 



1.45 



1.5S 



1.67 



1 



1.22 



1.22 



1.23 



1.43 



1.62 



1.90 



2.35? 



3.65? 



right and left sides of this chart are the same, except that 

 one side is the inverse of the other. On the left side 

 of the chart the internal pressures increase downward 

 while on the right side they necessarily increase upward. 

 The figures in the middle of the chart, increasing both 

 upward and downward from unity, are the factors ob- 



