:.\TED 01 El OTHER VAPORS. 



freezing point to the temperature /, and that the portion x Is thcu 

 into steam. During the first operation the change of entropy will be 



During the aeoood operation the change of entropy will be 



F 



since the beat U added at the constant temperature I. The entire 

 antropy trill bo 



At any other state the entropy of a unit of weight of a 

 aad wattr will be 



and the change of entropy will be 



*-t,_ 

 ing an adiabatic change no hear is transmitted, and the entropy to 



When the initial state im-liMim; tln value of x is known, and alto the 



foul :iture or pressure, the fiimi value of x l may be calculated by 



above ei and the initial and final volumes may be found by the 



v XM -- <r, v, = 271, -f <r ; 

 Che value of u for a given temperature or pressure, from the equation, 



u + <r. 



Entropy of the Liquid. Win u the specific heat of a liquid is known hi 

 terms of the teroi ibe entropy of th- li. 4 



f% 



B J. T' 



Is readily calculated. For water we have, for example, the entropy of the 

 l-'OTS log. + 1.0044 log. -h 1.0016 tog. . 



Ft U having the general formula for the heat of the liquid, 



g t + U* + d 8 , 



til*'' '-ntri'i-v is 



/) / (a + 26* + Sd*) <ft 



J. r 



