266 Journal of the Asiatic Society of Bengal. [August, 1909. 
40°5; while that in the shape of ammonium chloride went 
in the shape of ‘fine dust were invariably carried off into the 
‘“* Sprengel,’’ in sm of the packing of the bulbs with the 
materials named above 
DECOMPOSITION OF AMMONIUM PLATINIBROMIDE. 
The esi of carrying on the experiment was exactly the 
same as described above. As free bromine was liberated it 
was absorbed soketiincs by the po taaciath iodide solution with 
which the glass beads were moistened, and the amount of 
= e bromine was converted into bromate. The reaction 
monet proceeded simultaneously according to the two 
equat : ; 
(NHL) PtBr,= Pt + 2NH,Br + 4Br a | 
3 (NH,), PtBr,=3Pt + 16HBr e* 2NH, BE + ON, 6.32 
According to the first sane the bromine should be dis- 
tributed as NH,Br 22°50 p.c., in the free state, 45:02 p.c. 
total 67°52; while equation No. e requires the bromine as 
NH,Br 7: 50 p.c. and as HBr 60-02 respectively, and free 
nitrogen 2°62 p.c. Two otpaiueida carried on with the 
apparatus as shown in Fig. 2 without, however, the salt being 
dried by the Pi mesaetecas of phosphoric pentoxide, yielded 
the following result : 
Br ( free }% N ( free iv 
31-93 0-7 ri ae 
30°92 0- 20 on ii 
Whe en, however, the salt was more thoroughly dried and the 
moisture excluded by filling the bulbs with phosphoric 
pentoxide, a percentages of nitrogen rose to 1:28 and 1°58. 
(Exp. II and TV.) 
8 ing roughly, 70 per cent. of the salt decomposed 
aan = equation (1) in experiments I and II, while by 
taking o that moisture was excluded as far as possible, 
the dircuets of the reaction was reversed, the major portion 
ee 
may be dam 
dante = fies Seagal tiie dotee eres pel og aaa? 
