Drushel and Linhart — Metallic Alkyl Sulphates. 57 



and this on integration gives 

 2 X 2-3 



K = 



K)'«(A + B) 



° & B(A-ias) 



(24) 



(25) 



Experimental results. — The catalytic effect of hydrochloric 

 acid on the decomposition of ethyl barium sulphate is shown 

 in the following graph. The weights of barium sulphate 

 calculated to gram equivalents per liter are expressed as ordi- 

 nates, and the time in hours as abscissas. 



Fig. 1. 





1.09H/ICI 



I.BNHCt 



f 





0.9 NHL 



J 0-7/1/* 



CI 



OSA/I 



ICt 





a 



UMCl 



T 



\ 



/ 





















| 



"■ 0.200 



\ 1 



/ 



/ 



















5 







/ 



















\ 



> O./oo 



















oiS&Z 







! 













































— a?, 







r^ J 



'd i 



Is hi 



2 



JO a. 



fO J 



00 



* 







3i 



o 



T/me in Hoijns - 



BaS0 4 



Table I. 



In hours In grams In grm. equiv. 



K,* 



K,f 



K 3 | 





1 



0-1 N HC1 



= B 







48 '0 



0-0287 



0-0127 





00806 



0-0164 



0-00941 



950 



0600 



0-0257 





0-00817 



0-0166 



0-00956 



171-0 



0-1042 



0-0446 





0-00765 



0-0155 



0-00898 



213-0 



0-1360 



0-0583 





0-00788 



0-0160 



0-00927 



450-0 



0-2910 



0-1247 





0-Q0737 



0-0149 



0-00874 



QO 



0-7440 



0-3188= 



=A 











2 



3 N HC] 



= B 







240 



0-0370 



0-0159 





0-00687 



0-0146 



0-00875 



69-0 



0-1030 



0-0441 





0-00669 



0-0142 



0-00854 



141-0 



0-2120 



0-0908 





0-00674 



0-0142 



0-00863 



218-0 



0-3236 



0-1388 





0-00672 



00141 



0-00864 



313-0 



0-4690 



0-2010 





0-00688 



0-0142 



0-00888 



384-0 



0-5846 



0-2502 





0-00712 



0-0146 



0-00922 



481-0 



0-7178 



0-2977 





0-00692 



0-0141 



0-00898 



00 



0-7440 



0-3188= 



=A 









* Calculated from equation 19. f Calculated from equation 23. 



% Calculated from equation 25. 



