Table 205 {continued). 



207 



LATENT HEAT OF VAPORIZATION.* 



Substance, formula, and 

 temperature. 



/= total heat from fluid at o° to vapor at P. 



rr= latent heat at f. 



Authority. 



Acetone, 

 CsHeO, 



- 3° to 147' 



Benzene, 

 CeHe, 



7° to 215° 



Carbon dioxide, 



CO2, 



— 25° to 31°. 



Carbon disulphide, 



CS2, 



— 6° to 143°. 



Carbon tetrachloride, 



CCI4, 



8° to 163°. 



Chloroform, 

 CHCI3, 



— 5° to 159°. 



Nitrous oxide, 

 N2O, 



— 20° to 36°. 



Sulphur dioxide, 



SO2, 



0° to 60° 



/= 140.5 + 0.36644^ — 0.000516/2 

 I = 139-9 + 0.23356 i + 0.00055358 /2 

 r= 139.9 — 0.27287 t-\- 0.0001571 fi 



1= 109.0 + 0.24429/ — 0.0001315/2 



r2= 1 18.485 (31 —t) — 0.4707 (31 — fl) 



I = go.o + 0.14601 / — 0.00041 2 fi 



7^89.5 + 0.16993/ — 0.0010161 1--\- 0.000003424/3 



r =: 89.5 — 0.06530 / — 0.0010976 /- + 0.000003424 fi 



1= 52.0 + 0.14625/ — 0.000172 fi 



7=51.9 + 0.1 7867 / — 0.0009599 fi + 0.000003733 /" 



r= 51.9 — 0.01931 / — 0.0010505/2+ 0.000003733/3 



7 = 67.0 + 0.1375/ 



7^67.0 + 0.14716/ — 0.0000937/2 



^ = 67.0 — 0.08519/ — 0.0001444/2 



^-2= 131.75 (36.4 — /) — 0.928 (36.4 — /)2 



r = 91.87 — 0.3842 / — 0.000340 /2 



Regnault. 

 Winkelmann. 



Regnault. 



Cailletet and 

 Mathias. 



Regnault. 

 Winkelmann. 



Regnault. 

 Winkelmann. 



Regnault. 

 Winkelmann. 



Cailletet and 

 Mathias. 



Mathias. 



* Quoted from Landolt and Boemstein's " Phys. Chera. Tab." p. 350. 

 Smithsonian Tables. 



