ELECTRICAL CONDUCTIVITIES, ETC. 



77 



Table I. 



Substances with slight hydrating power. 



Temperature coefficients in 

 conductivity units. 



25 to 35 



50 to 65 



v = 8 = 1024 t> = 8 



= 1024 



Sodium chloride 



Sodium bromide 



Sodium iodide 



Sodium nitrate 



Sodium chlorate 



Potassium chloride 



Potassium bromide 



Potassium iodide 



Potassium nitrate 



Potassium chlorate 



Potassium permanganate . 

 Potassium sulphocyanate . 



Ammonium chloride 



Ammonium bromide 



Ammonium nitrate 



2.00 

 1.89 

 2.12 

 2.04 

 1.77 

 2.39 

 2.43 



. z 



38 

 08 

 02 

 2.04 

 2.20 

 2.42 

 2.32 

 2.17 



2.46 



2^54' 



2.45 



2.22 



2.84 



2.91 



2.91 



2.16 



2.52 



2.31 



2.56 



2.94 



2.86 



2.50 



2 



2. 

 2. 

 2. 

 > 



.27 

 .18 

 .33 

 .02 

 15 

 2.45 

 2.45 

 2.65 

 2.31 

 2.23 

 2.29 

 2.34 

 2.51 

 2.58 

 2.33 



2.82 

 2.79 

 3.14 

 2.67 

 2.90 

 3.11 

 3.11 

 3.37 

 2.83 

 2.94 

 2.23 



3.69 

 3.11 

 3.04 



Table II. 



The approximate hydration of a large number of substances has, however, been 

 worked out in this laboratory, and published in monograph No. 60 of the Publica- 

 tions of the Carnegie Institution of Washington. It will be seen that the substances 

 in Table I have little or no water of crystallization, and are therefore only slightly 



