Section yo. Description of the Hydrolysis Experiments. 179 



70. DESCRIPTION OF THE HYDROLYSIS EXPERIMENTS. 



As stated in section 60, the hydrolysis experiments were made by meas- 

 uring the conductance of certain ammonium acetate solutions, containing 

 in one case the salt alone and in other cases, in addition, varying quanti- 

 ties of ammonium hydroxide or acetic acid. Duplicate measurements 

 were made at 18, 100, and 156 with acetate solutions of two concentra- 

 tions, about 10 and 26 milli-normal. In the experiments with the mix- 

 tures, also made in duplicate, approximately equivalent, or two or five 

 times equivalent, quantities of the base or acid were simultaneously present. 

 The method of procedure in preparing the solution was to dilute quanti- 

 tatively by weight the 50 milli-normal stock solution (see section 62) in 

 one case with water and in other cases with the 100 milli-normal base or 

 acid solution, enough water being also added in these cases to make the 

 salt concentration the same as in the first case. The measurements were 

 all made in the bomb in the usual way. 



71. CONDUCTIVITY DATA FOR AMMONIUM ACETATE. 



The data of the experiments with ammonium acetate alone and with 

 acetic acid or ammonium hydroxide added are given in table 65 arranged 

 as in the preceding tables (50-53) ; but the specific conductance has been 

 given instead of the equivalent conductance, since we have to deal here 

 with mixtures. This was calculated by correcting the observed conduct- 

 ance for that of the water (but only in the 10 milli-normal solutions since 

 there it amounted to only about 0.1 per cent) and multiplying by the con- 

 ductance-capacity. In the experiments with ammonium hydroxide added, 

 made from March 27 to April 20, stock solution No. 3 prepared March 17 

 was used. In the later experiments of June 17 to June 26 an ammo- 

 nium hydroxide solution freshly prepared (on June 17) was employed. 



Table 65. Conductivity data for ammonium acetate. 



