I04 



Tables 84-86. 

 COMPRESSIBILITY OF GASES. 



TABLE 84.— Relative Volumes at Various Pressures and Temperatures, the volumes at 0° C and 

 at 1 atmosphere being tf.ken as 1 000 000. 



Amagat: C. R. m, P- 871, iSgo; Ann. chim. phys. (6) 29, pp. 68 en J 505, 1893, 



TABtE 85. —Ethylene. 

 />v at c° C and i atm. = I. 



Amagat, C. R. iii, p. 871, iSgo; 116, p. 946, 1893, 



TABLE 86.— Relative Gas Volumes at Various Pressures. 



The following table, deduced by Mr. C. Cochrane, from the PV curves of Amagat and other 

 observers, gives the relative volumes occupied by various gases when the pressure is reduced from 

 the value given at the head of the column to i atmosphere: 



(Temp.'= ie-C). 



"Perfect" gas 



Hydrogen 



Nitrogen 



Air 



Oxygen 



Oxygen (at o° C.) 



Carbon dioxide 



Relative volume which the gas will occupy when the pressure 

 is reduced to atmospheric from 



so atm. 

 50 



48.5 

 50.5 

 50.9 



52.3 

 69.0 



100 atm. 

 100 

 93.6 



100.6 

 101.8 

 105.2 

 107.9 

 477* 



120 atm. 

 120 



III-3 

 120.0 

 121. 9 



128.6 



485* 



150 atm. 



136.3 

 147-6 

 150.3 



161. 9 

 498* 



200 atm. 

 200 

 176.4 

 190.8 

 194.8 

 212.6 

 218.8 

 515* 



* Carbon dioxide is liquid at pressures greater than 90 atmospheres. 

 Smithsonian Tables. 



I 



