Prof. Graham on the Diffusion of Liquids* 



269 



Table X. — Diffusion of Nitrate of Potash and Nitrate of 

 Ammonia at 65°*9. 



Parts of anhydrous salt to 100 

 water. 



Density of solu- 

 tion at 60°. 



Experiments. 



Mean. 



Nitrate of potash. 

 2 



4 



6| 



10 



10123 

 10243 

 1-0393 

 1-0581 



7-34 

 7-58 

 7-49 

 13-66 

 14-24 

 1402 

 2211 

 22-94 

 22 05 

 3206 

 32-90 

 32-50 



7-47 

 13-97 

 22-37 

 32-49 



Nitrate of ammonia NH 4 0, NO 5 , 

 2 



4 



6§ 

 10 



1-0080 

 10154 

 1-0256 

 10375 



7-85 

 7-71 

 7-64 

 14-20 

 14-79 

 14-45 

 23-66 

 23-35 

 22-22 

 34-94 

 33-49 

 34-23 



7-73 

 14-48 

 22-74 

 34-22 



The solution of nitrate of ammonia of the water-jars was 

 evaporated carefully at a temperature not exceeding 120° F., 

 to prevent loss of the salt by sublimation or decomposition. 



Diffusion at 65°'9. 





2. 



4. 



6#- 



10. 



Nitrate of potash 



7-47 

 7-73 



13-97 

 14-48 



2237 

 22-74 



3249 

 34-22 







Although these salts correspond closely, it is probable that 

 neither the diffusion of these nor the diffusion of any others is 

 absolutely identical. The nitrate of ammonia appears to 

 possess a slight superiority in diffusion over the nitrate of pot- 

 ash, which increases with the large proportions of salt in solu- 

 tion. They are both considerably more diffusible than the 

 seven preceding salts. 



(5.) A second pair of isomorphous salts were compared, 

 the chlorides of potassium and ammonium. 



