Nature of Solution 

 Table II. 



97 



Water at 20°= 1. 



i°. 



Strength. 



Spec. grav. 



Differences. 



o 



20 



£NaCl 



1-01145 



•02226 





NaCl 



1-02258 



2 





2NaCl 



1-04389 



•02131 





3 , 



1-06437 



•02048 





4 





108409 



•01972 





5 





1-10266 



•01857 





6 





1-12099 



•01833 





7 





1-13838 



■01739 





8 





1-15503 



•01665 





9 





1-17140 



•01637 





10 





1-18707 



•01567 



>> 



10-99NaCl 



1-20191 



•01484 



This change of volume on solution can also be investigated 

 in another way — the change of volume attending dilution ; 

 and it is this method that is at once the simplest and most 

 accurate. Table III. contains the results of my experiments 

 under this head. In each case a solution of the salt containing 

 approximately 1 molecule to 100 molecules of water was pre- 

 pared, its specific gravity determined, and then diluted with 

 an equal volume of water. 



Table III. 



Water at 20° = 1 . C = contraction. Volume before mixing = 100,000. 



Salt. 



Spec, 

 grav. 



102252 



1st dilu- 

 tion. 

 Spec, 

 grav. 



C. 



2nd dilu- 

 tion. 

 Spec, 

 grav. 



C. 



3rd dilu- 

 tion. 

 Spec, 

 grav. 



O. 



4th dilu- 

 tion. 

 Spec, 

 grav. 



C. 



NaCl 



1-01142 



16 



1-00571 



1 









KOI 



1-02542* 



1-01283 



12 



1-00641 















NaN0 3 



1-03304 



1-01667 



15 



1-00841 



7 



1-0042 











KN0 3 



1-03379 



1-01706 



16 



1-00857 



4 



1-00428 











KCIO3 



1-04131 



1-02088 



23 



1-01052 



8 



100529 



3 



1-00265 







* This solution is weak. See Table V. 



