and Entropy-Temperature Diagrams of Fluids. 637 



Values of L/T are got from Ramsay and Young's values 

 •of L *. AVith these data the following numbers have been 

 •obtained for the entropy of the liquid and of the saturated 

 vapour, and the curve of fig. 1 has been drawn. 



Ethyl Alcohol. 



Temp. 



0° 



20 



40 



60 



80 



100 



120 



140 



160 



180 



200 



220 



240 



Entropy of 

 the liquid. 







00394 

 078.3 

 01171 

 0-1555 

 0-1936 

 0-2315 

 0-2692 

 0-3068 

 0-3442 

 0-3814 

 04185 



1 (critical) 



L 



Entropy of 



T' 



the vapour. 



0-8089 



0-8089 



0-7528 



0-7922 



0-6985 " 



0-7770 



0-6406 



0-7577 



0-5845 



0-7400 



05283 



0-7219 



0-4686 



0-7001 



0-4142 



0-6834 



0-3623 



0-6691 



0-3072 



0-6514 



02465 



0-6279 



0-1789 



0-5974 



0-0785 









- 51 (about) 



Fig. 1.— Ethyl Alcohol. 































^\ 



























































\ 



















\ 





















\ 



\ 



02 0-3 0-4 0-5 



Entropj 



* Phil. Trans. 1836, pt. 1, p. 153. 



