22 



ELECTROCHEMICAL INVESTIGATION OF LIQUID AMALGAMS 



The electrical measurements made with these amalgams are summarized 

 in table 2, together with the theoretical values calculated upon the assump- 

 tion that the gas law applies with exactness, according to the concen- 

 tration equation: 



RT , c m 

 T ^ in - 



F Cn 



TABLE 2. Electrical Measurements of Thallium Amalgams. 



The measurements with cell B at the lower temperatures were unsatisfactory, 

 and were rejected; cell D was measured only at 30. 



Each observed figure is the mean of at least three measurements. For 

 example, the Di-D2 was found to have a potential of 28.969 millivolts 

 by direct measurement. Di-D3 was found to be 59.551, and D2-D3, 

 30.596. Subtracting, we find again Di-D2 = 28.955. I n the same way, 

 by subtracting the observed value for D2-D4 from that for Di-D4, the 

 value 28.969 is found. The mean value 28.964 is given ; the same practice 

 was adopted in all cases. 



