WATER 



125 



the accompanying table K D stands for the 

 dielectric constant, H v for the latent heat 

 of vaporization, and K H for the absolute 

 conductivity for heat. It is to be observed 

 that on the whole all three quantities decrease 

 simultaneously. These properties are also 

 related to the critical pressure, to the van 

 der Waals constant a, and to the molecular 

 volume at the boiling point. 



Solvent 



Water, H 2 



Methyl alcohol, CH 3 OH . . . 

 Ethyl alcohol, C 2 H 6 0H . . . 

 Formic acid, H • COOH . . . 

 Acetic acid, CH 3 • COOH . . 



Ammonia, NH 3 



Methylamine, CH 3 • NH 2 . . 

 Sulphurous oxide, S0 2 . . . 

 Acetone, CH 3 • CO • CH 3 . . . 

 Ethylacetate, CH 3 • CO • O • C 2 H 5 



Benzene, CtMt, 



Toluene, CeH 5 • CH 5 .... 



Ether, (CoHs^O 



Chloroform, CHC1 3 .... 

 Tetrachlormethane, CCI4 

 Stannic chloride, SnCLj . . . 



K t 



0.154 



0.0495 



0.0423 



0.0648 



0.0472 



0.0348 

 0.0333 

 0.0307 

 0.0303 

 0.0288 

 0.0252 



Such evidence clearly suggests that some 

 of the manifold fitnesses of water proceed 

 from a single cause or group of causes. For 

 the present, however, these relationships are 



