876 



DK S. M. JOHNSTON ON THE BOILING AND FREEZING POINTS OF 



The following tables contain the results of the freezing-point observations which 

 have been made. The observations have extended, for a few salts and acids, over a 

 wide range of concentration, and were made for the sake of comparison with results 

 obtained at the boiling point. The results are given graphically in the comparative 

 sets of curves figs. 8 and 10 (pages 878 and 880). 



Ammonium Nitrate. 



Grms. Salt 



per 100 Grms. 



of Water. 



Grm. eqs. 

 per Litre. 



Depression 



of the 



Freezing 



Point. 



Equ. 

 Depression. 



Pv//*oo 



Per cent. 

 Hydrate. 



Molecules of Water of Hydration, 

 on the assumption that 



Molecules 



and Ions 



Hydrate ; per 



Mol. and Ion. 



Ions, only 

 Hydrate ; 

 per Ion. 



Molecules 



only 

 Hydrate ; 

 per Mol. 



64-32 



38-88 



17-58 



8-10 



3-78 



8 

 6 

 4 

 2 

 1 

 •5 



8-65 



14-8 



11-264 

 6 - 565 

 3-168 

 1-54 



1-08 



2-60 



2-816 



3-282 



3-168 



3-08 



•298 

 •391 

 •465 

 •512 

 •543 

 •584 







3-3 

 3 3 



14-3 



10-1 



4-4 



2 ; 7 

 3-7 

 3-3 



3-9 



5-1 



4-4 



8-3 

 13-7 

 12-8 



Lithium Chloride. 



Grms. Salt 



per 100 Grms. 



of Water. 



Grm. eqs. 

 per Litre. 



Depression 



of the 



Freezing 



Point. 



Equ. 

 Depression. 



Mv/Voo 



Per cent. 

 Hydrate. 



Molecules of Water of Hydration, 

 on the assumption that 



Molecules 



and Ions 



Hydrate ; per 



Mol. and Ion. 



Ions, only 

 Hydrate ; 

 per Ion. 



Molecules 



only 

 Hydrate ; 

 per Mol. 



53-448 

 43-520 

 29-104 

 14-824 

 10-064 

 5-236 

 2652 



10 

 8 

 6 

 3 

 2 

 1 

 •5 



73-0 

 62-0 

 45-5 

 12-95 

 7-90 

 3-10 

 1-50 



7-30 



7-77 



7-58 



4-32 



3-95 



3-1 



3-0 



•100 

 •198 

 •223 

 •313 

 •352 

 •475 

 •485 



77-1 

 73-4 

 70-0 

 435 

 36-4 

 22-8 

 17-0 



32 

 3-4 

 4-6 

 5-6 

 6-5 

 7-0 

 8-9 



17-1 

 10-2 

 11-2 

 12-0 

 12-6 

 11-4 

 12-9 



3-8 



5-0 



7-3 



11-0 



13-4 



21-0 



176-0 



