Wheeler and Penfield — Alkaline Iodates. 



123 



Table III. 

















Error 





4 



Error 







KNO a 



MnCl, 



KNO 





in terms 



of 





in terms of 





taken. 



mixture. 



found 





KNOa 







HN0 3 . 







0-2038 



grm. 



20 



cm 3 







2047 



ffrra. 



0-0009 grm 



+ 



0-0005 g 



rm 



.+ 



0-2053 



a 



20 



a 







2057 



a 



0-0004 



a 



+ 



0-0003 



a 



+ 



0-1032 



a 



10 



a 







1035 



a 



0-0003 



a 



+ 



0-0002 



a 



+ 



0-1017 



a 



10 



a 







1004 



a 



0-0013 



a 



— 



0-0008 



a 



— 



0-1049 



a 



10 



a 







1049 



a 



o-oooo 



a 





0-0000 



a 





0-1027 



a 



10 



a 







1023 



a 



0-0004 



a 







0-0003 



a 



— 



0-0524 



t< 



10 



a 







0526 



a 



0-0002 



a 



+ 



o-oooi 



a 



+ 



0-0513 



tt 



10 



a 







0512 



a 



o-oooi 



tt 







o-oooi 



a 



— 



00354 



u 



10 



a 







0350 



a 



0-0004 



a 



— 



0-0003 



tt 



_ 



0-0232 



a 



10 



a 







0230 



tt 



0-0002 



a 



— 



o-oooi 



a 



— 



0-0107 



a 



5 



a 







0106 



a 



0-0004 



a 







o-oooi 



u 



— 



0-0127 



a 



5 



a 







0130 



a 



0-0003 



a 



+ 



0-0002 



a 



+ 



0-0145 



a 



5 



a 







0143 



a 



0-0002 



tt 



— 



o-oooi 



a 



_ 



0-0053 



a 



5 



it 







0052 



a 



o-oooi 



a 







o-oooi 



tt 



__ 



0-0043 



tt 



5 



a 







0047 



a 



0-0004 



a 



+ 



0-0003 



a 



+ 



0-0014 



a 



5 



a 







0018 



a 



0-0004 



a 



+ 



0-0003 



a 



+ 



o-oooo 



a 



5 



a 







0000 



tt 



o-oooo 



tt 





o-oooo 



a 





The titration should be completed as soon as may be after 

 admitting air to the distillate in order that traces of dissolved 

 nitric oxide may not be reoxidized and again react upon the 

 iodide present to liberate more iodine. 



Aet. XVIII. — On some Alkaline Iodates ; by H. L. Wheelee. 

 With Crystallograj)hic Notes ; by S. L. Penfield. 



While work on the compounds of iodine trichloride with 

 alkaline chlorides* was in progress in this laboratory, it was 

 noticed in making KC1 . C1 3 I, KbCl . Cl 3 I and CsCl . C1 3 I that 

 white crystals were often formed under certain conditions. 

 These compounds proved to be KC1 . KI0 3 . HI0 3 , KbCl . HI0 3 

 and 2CsI0 3 . I 2 5 . Since they were not analogous, although 

 formed under similar conditions, and since the rubidium and 

 csesium salts have not been described, an investigation of them 

 was undertaken. Attempts to prepare these compounds by 

 other methods led to the discovery of several other iodates. 

 The new compounds that have been prepared are as follows : 



RblO; * CsI0 3 



RbI0 3 . HI0 3 2CsI0 3 . I o 6 



RbI0 3 . 2HI0 3 2CsI0 3 . I„"0 5 . 2HI0 3 



RbCl . HI0 3 CsCl . HI0 3 



3RbCl . 2HI0 3 



* This Journal, xliv, 42. 



