304 .Browning — Estimation of Caesium and Rubidium, etc. 



sulphates of the form R 2 SQ 4 . Lithium gives neither salts of 

 the type RHS0 4 nor of the type R 2 S 2 7 under the conditions 

 of these experiments. 



Table IV. 









Na 2 S 2 7 





Na, 



1SO4 











NaCl 



calcu- 



Nja a S 9 0, 



cal< 



3u- Na 2 S0 4 









taken. 



lated. 



found. Error. 



lated. foui 



id. Error. 







grm. 



grm. 



grm. grm. 



grm. grm. grm 







1 



0-1042 



0-1978 



0-1972 0-0006 — 



1: 



236 0-1254 0-001 



2 





2 



0-1028 



0-1952 



C'1952 0-0000 













3 



0-1093 



0-2075 



0-2005 0-0010 — 



0-1328 0-1320 0-0008 — 





4 



0-1402 



0-2662 



0-2651 0-0011 — 



o-i 



703 0-1696 0-0007 — 











Table V. 

















RbBS0 4 



+ 





Rb 2 S0 4 + 













CsHSC 



> 4 RbHS0 4 + 





Cs 2 S0 4 



Rb 2 S0 4 + 







Rb( 



CsHS0 4 





calcu- 



Cs 2 S0 4 









taken. 



lated. 



found. Error 





lated. 



found. 



Error. 







grm. 



grm. 



grm. grm. 





grm. 



grm. 



grm. 





RbCl 0-1428 













(1) 



CsN0 3 0-1264 0-3646 0'3666 0-002 



0-f 



0-2749 



0-2752 



0-0003 + 









^ 2 b 2 U7 



+ 





Na a S0 4 + 













K 2 S 2 



7 Na a S 2 7 + 





K 2 S0 4 



Na 2 S0 4 + 









NaCl + KC1 



K 2 S 2 7 





calcu- 



K 2 S0 4 









taken. 



lated. 



found. Error. 





lated. 



found. 



Error. 







grm. 



grm. 



grm. grm. 





grm. 



grm. 



grm. 





NaCl 0-1233 













(2) 



KC1 



0-1340 0'462< 



0-4630 0-0003 + 



3062 



0-3040 



0-0022 — 



March, 1901. 



