SCHLUNDT SPEED OP THE LIBERATION OF IODINE 



19 



SECTION C. 



This section embraces a series of experiments in which 

 excesses of both the hydrochloric acid and potassium 

 iodide enter, the amount of potassium chlorate remaining 

 constant. The results obtained have a direct bearing upon 

 analytical methods as these are the conditions under 

 which chlorates are estimated. 



(1) Series in which both the H CI and K I are doubled^ 

 the K CI O3 remaining constant and tenth normal, ' — 



Excess 



K CI O3 + 6 KI + 6 HC1+ 6HC1 + 6KL 



A sample of 400 cc. was made up as follows : 



Xormal Hydrochloric Acid 80.0 cc. 



Normal Potassium Iodide 80.0 cc. 



Three times normal Potassium Chlorate 13.3 cc. 



Water 226.7 cc. 



400.0 cc. 



1 Curve A, Figure 4. 



