414 Dr. C. R. A. Wright on the Relations between 



for water and the alcohol employed, e that of the resulting ether, 

 and /that of the acid used. 













Heat- 





b. 



e. 



c. 



/■ 



disturbance. 



Methyl formate . . . 



579 



68-0 



53-4 



972 



-247 



„ acetate . . . 



57'9 



87-0 



53-4 



1100 



-18-5 



„ butvrate... 



579 



1151 



53-4 



146-3 



-267 



„ valerate . . . 



57-9 



115-2 



53-4 



149-5 



-29-8 



Ethyl formate . . . 



57-9 



920 



637 



972 



-110 



„ acetate 



57-9 



91-5 



637 



1100 



-24-3 



„ butyrate ... 



57-9 



1477 



63-7 



146-3 



- 4-4 



„ valerate ... 



57-9 



114-4 



637 



1495 



-409 



Amyl acetate 



57-9 



967 



86-2 



1100 



-41-6 



,, valerate ... 



579 



151 3 



86-2 



149-5 



-26-5 



Cetyl palmitate ... 



579 



2427 



1067 



204-3 



-10-4 



If the corrected values given in the above Table for methyl 

 butyrate and valerate, ethyl formate and butyrate, and amyl 

 acetate be taken instead of the directly calculated numbers, the 

 following heat-disturbances are found : — 





Corrected value 



Heat- 





of e, 



disturbance. 



Methyl butyrate... 



105-0 



-36-8 



Methyl valerate... 



1100 



-35-0 



Ethyl formate ... 



86-0 



-170 



Ethyl butyrate ... 



110-0 



-42-1 



Amyl acetate 



114-4 



-23-9 



so that the heat-absorption is even more plainly visible with the 

 corrected numbers than with those directly calculated. 

 21. When alcohols are oxidized to acids by the reaction 

 ( C » H 2«+i) 0H + Q 2 = (C n H 2 "" 1 O) OH + H 2 0, 



much heat is developed. Here m = 0, and the heat-disturbance 

 is given by the equation 



where b, c, and / indicate, as before, the affinity- values for water, 

 the acid formed, and the alcohol employed respectively, g being 

 the value for oxygen, or zero. 





b. 



/• 



c. 



Heat- 

 disturbance. 



Methylic alcohol .. 

 Ethylic alcohol ... 

 Amylic alcohol ... 

 Cetylic alcohol ... 



57-9 

 579 

 57 9 

 57-9 



97-2 

 110 

 149-5 



204-3 



53-4 i +1017 



63-7 ! +104-2 



86-2 | +121-2 



1067 i +1555 



