SILVER, POTASSIUM, .ETC. 51 



45.060 



45-075 

 45.080 

 45-067 



Mean, 45.0705, i .0029. 



The ratio between silver and sodium chloride has been fixed by Pe- 

 louze, Dumas, and Stas. Pelouze* dissolved a weighed quantity of silver 

 in nitric acid, and then titrated with sodium chloride. Equivalent to 

 IW parts of silver he found of chloride : 



54.158 

 54.125 



54.139 



Mean, 54.141, =h .0063 



By Dumas f we have seven exi)eriments, with results as follows. The 

 third column oives the ratio between 100 of silver and NaCl : 



2.0535 §"■'■'- NaCl ^ 3.788 grm. Ag. 



54-211 



Stas. I applying the method used in establishing the similar ratio for 

 potassium chloride, and working with salt from six different sources, 

 found of sodium chloride equivalent to 100 parts of silver: 



54.2093 

 54.2088 

 54.2070 

 54.2070 

 54.2070 

 54.2060 

 54.2076 

 54.2081 

 54.2083 

 54.2089 



Mean, 54.2078, =h .0002 



As in the case of the corresponding ratio for potassium chloride, these 

 data needed to be checked by others which took into account the solu- 



*Compt. Rend., 20, 1047. 1845. 



t Ann. Cheni. Pharni., 113. 31. 1S60. 



t Aronstein"s translation, p. 274. 



