444 Gooch and Gates — Decomposition of Hydrochloric Acid. 



proved to be free from chlorine by testing with potassium 

 iodide. So it is probable that the slight diminution found in 

 washing with sodium hydroxide the anode gas of the first two 

 runs was due to solubility of oxygen rather than to the pres- 

 ence of chlorine. 



The details of five-minute readings and the finals are given 

 in the table. 





Table IV. - 



-Anode 



of Platinum : Area 



l-25 cm 



2 









Volume of Solutions 330 cm3 















Concen- 





Eatio 











tration: 





of 





Cur 





Poten- 



parts Hydro- 



Oxy- 



Oxygen 



Time 



rent 



N.B. 10 



tial 



in gen 



gen 



to 



min. 



amp. 



amp. 



volt 



1000 cm 3 

 A 



cm 3 



Hydrogen 



Start 



•07 : 



5-6 



87' 



0-043 







5 



•095 



7'6 



87-5 



3'7 



" V-7 



_„._ 



10 



•105 



8-4 



87 



4-0 



1-7 







15 



•105 



8-4 



87 



___„ 3-9 



1-8 







20 



•105 



8-4 



87 



4-1 



1-7 



. _ - - 



25 



•100 



8-0 



86'5 



4-0 



1-7 







30 



•100 



8-0 



86*5 



4-1 



1-7 









23-8 



10-3* 



•433 



5 



•100 



8-0 



85 



3'9 



1-7 





10 



•100 



8-0 



85 



4-0 



1-6 





15 



•100 



8-0 



84 



3-7 



1-6 



. 



20 



•095 



7-6 



86 



4-1 



1-8 



. _ _ _ 



25 



•105 



8-4 



87 



4*0 



1-7 







30 



•100 



8'0 



86 



3-7 



1-7 





35 



•095 



7-6 



86 



4-0 



1-8 







40 



•100 



8-0 



85 



3-5 



1'6 





45 



•100 



8-0 



85 



3-7 



1-6 









34*6 

 C 

 3-4 



15-lf 



•436 



5 



•09 



7-2 



90 



1-6 





10 



•09 



7-2 



87 



3-6 



1-6 







15 



•09 



7'2 



90 



3-7 



1-7 







20 



•09 



7-2 



90 



3-6 



1-7 







25 



•09 



7-2 



89 



3-7 



1-6 



. . 



30 



•09 



7-2 



87-5 



3-6 



1-6 





35 



•09 



7-2 



87 



3-5 



1-4 





40 



•085 



6'8 



87 



3-7 



1-8 







45 



•100 



8-0 



87 



4-0 



1-6 







32' 



14- 



'445 



* Uncorrected for chlorine. 



f Uncorrected for chlorine. After washing with NaOH the 25*4 cm3 of A 

 and B was reduced to 24*9 cm . 



\ Proved free from chlorine by KI. 



