56 Brown — Work on the Interaction of Hydrochloric Acid. 



Table VI (continued). 



Oxygen value KMn0 4 =0-0003894 grin, per cm 3 . Iodine value Na 2 S 2 3 =0-005671 

 grm. per cm 3 . 9-90 cm3 KMnO 4 = 10-80 cni3 Na 2 S 2 3 . l cm3 Na 2 S 2 O 3 =0-9l7 cni3 KMn0 4 . 



N 

 yHCl 



cm 3 . 



N 

 ro CrCl s 



cm 3 . 



H.,0 

 cm 3 . 



KMn0 4 

 cm 3 . 



<x> . 



CD 



a 



® 



cS . 

 M o 



a 



Na 2 S 2 3 

 cm 3 . 



KMn0 4 



equiv. 



cm 3 . 



KMn0 4 

 lost 



cm 3 . 











o 

 H 









100 



9-90 





9-90 



5 



50 



10-61 



9-72 



0-18 



100 



990 





9-90 



10 



.50 



10-33 



9-47 



0-43 



100 



9-90 





9-90 



15 



50 



9-89 



9-06 



0-84 



100 



9-90 







9-90 



30 



50 



965 



8-84 



1-06 



100 



9-90 





9-90 



45 



50 



9.61 



8-81 



1-09 



100 



9-90 





9-90 



60 



50 



9-61 



8-81 



1-09 



MnCl 2 



100 

 100 

 100 

 100 

 100 

 100 



9-90 

 9-90 

 9-90 

 9-90 

 9-90 

 9-90 





9-90 



5 



50 



10-73 



9-83 





9-90 



10 



50 



10-69 



9-80 







9-90 



15 



50 



10-67 



9.78 



... 



9-90 



30 



50 



10-52 



9-64 



■__ 



9-90 



45 



50 



10-43 



9-56 



-- 



9-90 



60 



50 



10-50 



9-62 



0-07 

 010 

 0-12 

 0-26 

 0.34 

 0-28 





N 

 ^MnS0 4 

















cm 3 . 















100 



9-90 





9-90 



5 



50 



10-72 



9'83 



0-07 



100 



9-90 





9-90 



10 



50 



10-70 



9-81 



0-09 



100 



990 







9-90 



15 



50 



10-56 



9-68 



0-22 



100 



9-90 





9-90 



30 



50 



10-48 



9-61 



0-29 



100 



9-90. 







9-90 



45 



50 



10-49 



9-61 



0-29 



100 



9-00 



-• 



9-90 



60 



50 



10-50 



9-62 



0-28 



Here may be noted a greater loss of permanganate during 

 equal periods of time with cadmium and chromic chlorides 

 than with hydrochloric acid alone, the excess loss in the former 

 case increasing with the time of digestion. This phenomenon 

 is especially noticeable with cadmium chloride, and to deter- 

 mine whether this excess loss of permanganate is in any way 

 proportionate to the amount of cadmium chloride used, amounts 

 of this salt greater than that represented by 9-90 cm3 of a tenth- 

 normal solution were used. The result was as anticipated ; the 

 loss of permanganate increased with the increase in the amount 

 of cadmium chloride used, until with 2 grams of this salt the 



