Laio of Molecular Force. 

 Table (^continued). 



317 



Substance. 



Formula. 



1000 

 kK. 



lOTK) 

 A.A. 



1000 

 kKni- 



Carvol 



Phenyl chloride 



Phenyl sulphocyanate 



Resorcin 



Acetobutyric anhydride ?... 



Cuminol 



Methyl benzoate 



Ethylene chloride 



Propylene chloride 



Phosphoryl chloride 



Amyl nitrate 



Ethyl benzoate 



Paraldehyde 



Benzoyl chloride 



Ethyl oxalate 



Methyl paracres olate 



Ethyl monochloracetate ... 



Benzilidene chloride 



Phosphorus sulphochloride 

 Trichlorethane 



CgHjCl 



C,H5CNS 



C6H,(0'HCH3), 



CeHjCO'C'CHg 

 C^H^Cl 



C.,H,C1, 

 C,H,e0'0" 



CgH^Clo 



pocr 



C2H5CO'0"CeH5 



0,H„0"3 

 CeHjCC'Cl 



CgHgO-H I ^^^^^^ 

 OoH,C10'0"C2H5 



' o;h,chgi2 



PSCl 

 CH,C1CHCL 



12? 



12 

 12 

 12? 



444 

 440 



434 

 431 

 431 



435 



228 



13 



422 



417 

 417 

 412 

 402 

 390 

 388 

 388 



414 



229 



387 

 379 

 373 

 365 



362 



359 



357 

 356 



387 

 379 



365 



225 

 231 



232 



Mean value . . . 228 



This table shows that, although the values of kK do not 

 change at a bound on passing from one value of nto another, 

 yet the mean value of ^A taken for a given value of n found 

 in the manner indicated varies closely inversely as the two- 

 thirds power of n or kA = 228ln^. 



A study of the table shows that the compounds containing 

 chlorine possess such values of ^A as would make CI equal 

 to 5C or 6C. With regard to N in the cyanides, its value 

 appears to diminish as the molecular weight of the compounds 

 into which it enters increases ; in the amines, on the other 

 hand, N can with considerable accuracy be put equal to C ; 

 or if we solve strictly for n by the equation above, the value 

 deduced for N is '8 C. In the nitrites N02 = 5*6C and as 

 02 = 0'0" = 5C, N in the nitrites =-6C. In the nitrates 

 KOgin the mean has the value 8'6 C ; and as 03 = 0'02'' = 8 C, 

 the value of N in the nitrates is '6 0. 



The small influence of the hydrogen atom in the molecule is 

 shown by the fact that in the previous table the number of H 

 atoms has been ignored ; with a more accurate treatment the 



