SODIUM IODIDE. 



47 



TABLE 23. Comparison of conductivities. 



SODIUM IODIDE. 



The sodium iodide used was a preparation that had been carefully purified 

 by Jones and Lindsay. The salt was dried in an air-bath for three days at 

 a temperature of 1 10 to 130. This prolonged treatment was found necessary 

 to bring it to constant weight. The original solutions were made up by 

 direct weighing. 



TABLE 24. Conductivity of sodium iodide at and 25. 



1 These values are those given by Ostwald [Ztschr. phys. Chem., 7, 74 (1887)]. The agreement 

 s seen to be quite satisfactory. 2 The values at are uncorrected for conductivity of solvent. 



