Gooeh and Blumentlial — Iodic Acid Process. 



471 



ual chloride was precipitated by silver nitrate. After standing 

 over night, the silver chloride was filtered off on asbestos in a 

 perforated crucible, dried at gentle heat, and weighed. 



The amounts of potassium bromide calculated from the 

 iodate used up, and the amounts of sodium chloride equivalent 

 to the silver chloride weighed, are given in the table, in com- 

 parison with the amounts taken of these substances respec- 

 tively. 



Molecular Ratio of KBr to NaCl, 1 : 1. 



KBr 



NaCl 



KBr. 



NaCl 



Error 



Error 



Final 



taken. 



taken. 



formed. 



formed. 



in KBr. 



in NaCl. volume. 



grm. 



grm. 



grm 



grm. 



grm. 



grm. 



cm 3 . 



0-1984 



0-0974 



0-2006 



0-0995 



+ 0-0022 



+ 0-0021 



* 



0-1984 



0-0974 



0-1981 



0-0996 



— 0-0003 



+ 0-0022 



* 



0-1984 



0-0974 



0-1996 



0-1003 



+ 0-0012 



+ 0-0029 



* 



0-1984 



0-0974 



0-1983 



0-0996 



— 00001 



+ 0-0022 



* 



0-1984 



0-0974 



0-1939 



0-1004 



— 0-0045 



+ 0-0030 



76 



0-1984 



0-0974 



0-1966 



0-1008 



— 0-0018 



+ 0-0034 



74 



0-1984 



0-0974 



0-1990 



0-0998 



+ 0-0006 



+ 0-0024 



38 



0-1984 



0-0974 



1-1945 



0-1004 



— 0-0039 



— 0-0030 



74 



* 



The final volume, 50 



m3 to 75 cm3 , 



was not measured exactly 







Molecular Ratio of KBr 



to NaCl, 2 : 



1. 





0-1984 



0-0487 



0-1940 



0-0517 



— 0-0044 



+ 0-0030 



50 



0-1984 



0-0487 



0-1904 







— 0-0080 







65 



9-1984 



0-0487 



0-1926 



0-1519 



— 0-0058 



+ 0-0032 



68 



0-1984 



0-0487 



0-1965 



0-0522 



— 0-0019 



+ 0-0035 



65 



0-1984 



0-0487 



0-1942 







— 0-0042 







78 



0-1984 



0-0487 



0-1945 



0-0521 



— 0-0039 



+ 0-0034 



80 



0-1984 



0-0487 



0-1949 



0-0518 



—0-0035 



+ 0.0031 



65 



0-1984 



0-0487 



0-1942 



0-0526 



— 0-0042 



+ 0-0039 



70 



0-1984 



0-0487 



0-1959 



00525 



—0-0025 



+ 0-0038 



76 







Molecular 



Ratio of KBr ; NaCl, 1 : 



2. 





0-1984 



0-1948 



0-1964 



0-1954 



— 0-0020 



+ 0-0006 



* 



0-1984 



0-1948 



0-1952 



0-1990 



— 0-0032 



+ 0-0042 



* 



0-1984 



0-1948 



0-1967 



0-1969 



— 0-0017 



+ 0-0021 



* 



0-1984 



0-1948 



0-1978 



0-1984 



— 0-0006 



+ 0-0036 



* 



0-1984 



0-1948 



0-1974 



0-1980 



—o-ooio 



+ 0-0032 



* 



0-1984 



0-1948 



0-1983 



0-1984 



—o-oooi 



+ 0-0036 



* 



0-1984 



0-1948 



0-1988 



0-1985 



+ 0-0004 



+ 0-0037 



* 



0-1984 



0-1974 



0-1983 



0-1028 



—o-oooi 



+ 0-0054 



75 



0-1984 



0-1974 



0-1960 



0-1022 



+ 0-0024 



+ 0-0048 



70 



*The final volume, 50 cm3 to 75 cm3 , 



was not measured exactly. 





In these experiments, made with reagents carefully stand- 

 ardized at the outset and restandardized in the course of the 

 investigation, the errors are generally large and irregular, inde- 

 pendent of the final concentrations within the limits shown, 



