100 



Studies on Solution. 



ing exact comparison with those at 25 an impossibility. They inter- 

 preted their results in a manner similar to that of Goldschmidt, and 

 so their deductions are really illustrated in the latter's communication. 



Dhar and Bhattacharyya 1 carried on some work in alcohol with 

 various salts and studied among others the following organic deriva- 

 tives: sodium propionate, sodium benzoate, and sodium salicylate. 

 Their measurements at odd concentrations and temperatures render 

 comparison impossible. 



Heinrich Goldschmidt, 2 incidental to his study of the esterification 

 of organic acids in absolute alcohol, found it necessary to measure the 

 conductances at 25 of a number of sodium salts of these acids. The 

 salts were made by neutralizing the alcoholic solutions of the acids 

 with an alcoholic solution of sodium ethylate. Goldschmidt measured 

 the conductances from N/10 to N/5120 concentrations, and the values 

 determined for five different salts are shown in tables 59 to 63. These 

 results are given to enable us to discuss them and the deductions 

 leading from them, as well as to point out later wherein we differ from 

 him as to certain conclusions. These salts are sodium trichloroacet- 

 tae, dichloroacetate, picrate, salicylate, and sulphosalicylate. There is 

 appended to each table his calculation of A for the salt at specified 

 dilutions. 



TABLE 59. Sodium Trichloroacetate. 



TABLE 60. Sodium Dichloroacetate. 



"46.10 



A (1230-5120) = 4O.OZ 



Mean A = 46 



(320-12SO) 

 (640-2560) 

 (320-1280) 

 (640-2560) 

 (1280- 

 (320- 



= 48.54] 

 = 49.43 

 = 47.68 

 =48.36 



A (640-2560) 49-14 III 

 AQ (1280-5120) = OU.yU 



Value A = 52 



II 



'Zeit. anorg. Chem. 82, 357 (1913). 2 Zcit, physik. Chem. 89, 129 (1914); 91, 46 (1916). 



