562 



The two mixtures a and b lui-i the following concentration 



(4.476 ,^T. KCl 

 n \ 



(2,340 gr. NaCl 



(1,492 gr. KCl 



or 



'4,680 gr. NaCl 



or 



60 niol. "/„ KCl 



40 mol. 7„ NaCl 



20 mol. 7„ KCl 



80 mol. 7„ NaCl. 



The result of the investigation is given in the preceding table, p. 561 in 

 which all the quantities are calculated for 100 gr. of the mixture. 



It appears with the greatest clearness from the good agreement 

 between the values in the columns 2, 3, 4, and 5 that in the two 

 cases the coexisting liquid has the same concentration for the examined 

 threephase equilibrium, from which follows that we have really to 

 do here with the phenomenon of unmixing in the solid state, which, 

 as is indicated ir. the T,AMignre, occurs over an ever diminishing 

 region of concentration at higher temperature, terminating finally in 

 an upper critical mixing -point. 



Towards lower temperature the unmixing always increases so that 



cm 



/ïaCe 



