204 



JONES ANT) SCHTMB. 



The equivalent conductances and degrees of dissociation of thallous 



nitrate solutions at round concentrations deduced from the above 

 data by interpolation over small intervals are shoT^ti in the foUo'tting 

 table : 



TABLE III. 



EqTIVALEXT CoNDrCT.VNXE AND DeGRZE OF DISSOCIATION OF T ha T.T.OUS 



XlTEATZ SoLmONS. 



Section 2. The Conducti^-ity of Saturated Solutions of Thallous 

 Chloride and of Thallous Iodide at 25°C. and 0°C. and the Solubihty 

 of these Salts. 



For the interpretation of the electromotive force measurements to 

 be described in the next section a knowledge of the concentration of 

 the ions in saturated solutions of thallous iodide and of thallous 

 chloride at O'C. and at '2b'C. is required. ^leasurements were there- 

 fore made of the conducci\-itv of the saturated solutions, from which 

 the concentrations of the ions have been computed by the aid of the 

 mobility of the ions which had been determined for the purpose 

 'see Section 1;. 



The total solubility of thallous chloride at 2.5^ has been determined 

 by several experimenters ^^ith good agreement in results. Berkeley's ^^ 

 results over a range of temperature extending from 0° to 100° have been 

 plotted in a cur\-e, from which the values for 25° and 0° may be de- 

 termined by interpolation. His values for the two temperatures, 



11 Earl of Berkeley, Phil. Trans.. 203 A.. 208 (1904 j. 



