296 Gooch and Mar — Deter inination of Chlorine. 



Series D. 



Taken 

 H 2 S0 4 

 [1:1]. 



Taken 

 KC1=HC1. 



Found 

 AgCl=HCl. 



Initial 

 volume. 



Final 

 volume. 



Error. 



cm 3 

 10 

 10 

 10 



grm. 

 0-4 

 0-4 

 0-4 



grm. 

 0-1956 

 0-1956 

 0-1956 



grm. 

 0-7690 

 0-7682 

 0-7574 



grm. 

 0-1955 

 0-1954 

 0-1926 



cm 3 

 110 

 110 

 110 



cm 3 

 60 

 50 

 35 



grm. 



o-oooi- 



0-0002 — 

 0-0030 — 



Series E. 



5 



5 

 5 

 5 



0-2 

 0-2 

 0-2 

 02 



00978 

 0-0978 

 0-0978 

 0-0978 



0-3845 

 0-3838 

 0-3823 



0-3788 



0-0978 

 00976 

 0-0972 

 0-0963 



105 

 105 

 105 

 105 



55 

 45 

 35 

 25 



00000 

 0-0002 — 

 0-0006- 

 0-0015 — 



Series F. 



20 



20 

 20 

 20 



0-2 

 0-2 

 02 



o-i 



0-0978 

 0-0978 

 0-0978 

 0-0978 



0-3782 

 0-3602 

 0-3087 

 0-2931 



0-0962 

 0-0916 

 0-0785 

 0-0745 



120 

 120 

 120 

 120 



75 

 65 

 55 

 45 



00016 — 

 0-0062 — 

 00193 — 

 00233- 



The quantities of chloride dealt with in the preceding ex- 

 periments are rather smaller than those which would naturally 

 be handled in practical analysis, so that it seemed best to extend 

 the experimentation to solutions of greater dilution and con- 

 taining larger amounts of chloride. In the experiments of 

 Series G, and subsequently, the second mode of treatment 

 referred to was adopted. The flask was filled as before, but 

 was connected with an ordinary glass condenser so that the 

 distillate might be collected and measured, and the hydro- 

 chloric acid condensed with the steam was estimated by pre- 

 cipitation as silver chloride, the last being dried and weighed 

 as such upon asbestos. The details of the experiments are 

 given in the tabular statement. 



Series G-. 



Taken 















H 2 S0 4 



Taken 



Initial 



Final 



Time in 



Found 



Loss of 



[1:1]. 



KC1=HC1. 



volume. 



volume. 



minutes. 



AgCl. 



HCL 



cm 3 



grm. 



grm. 



cm 3 



cm 3 





grm. 



grm. 



10 



1 



0-4888 



400 



300 



29 



0-0005 



o-oooi 



10 



1 



0-4888 



400 



300 



22 



0-0008 



0-0002 



10 



1 



0-4888 



350 



300 



10 



0-0004 



o-oooi 



10 



1 



0-4888 



350 



300 



9 



00005 



o"-oooi 



10 



1 



0-4888 



300 



200 



25 



0-0008 



00002 



10 



1 



0-4888 



200 



100 



27 



00021 



0-0005 



10 



1 



0-4888 



100 



50 



20 



00037 



0-0009 



It is obvious from these results that a solution containing 

 10 cm 3 of the 1 : 1 sulphuric acid, or 5 cm 3 of the strong acid, 

 may be concentrated to 200 cm 8 without significant loss of 



