

GERMANIUM. 195 



These are to be computed with 



O = -- 15.879, + .0003 Br 79.344, zb .0062 



Ag = 107. 108, .0031 AgCl = 142.287, .0037 



cl = 35- z 79, =b - 48 AgBr = 186.454, =b -54 



For the molecular weight of titanium chloride they give two values : 



From (i) ...................... TiCl 4 == 188.583, .0144 



From (2) ...................... " = 188.519, rb .0119 



General mean ............. TiCl 4 = 188.545, .0092 



For TiBr we have 





From (5) ...................... TiBr 4 = 365.i74, .0157 



From (6) ...................... " = 365.163,^.0380 



General mean ............ TiBr 4 = 365. 172, =b .0145 



And for the atomic weight of titanium five values are calculable, as 

 follows : 



From molecular weight of TiCl 4 ...... Ti = 47.829, rb .0213 



From molecular weight of TiBr 4 . ..... " =47.796, rb .0260 



From (3) .......................... " = 47.809. .1725 



From (4) ---- , ..................... " =47.698, .0268 



From (7) ....... .................. " = 47-738, .0787 



General mean ..... . ........... Ti = 47.786, d= .0138 



If = 16, this becomes Ti = 48.150. 



GERMANIUM. 



The data relative to the atomic weight of germanium are rather scanty, 

 and are due entirely to the discoverer of the element, Winkler.* The 

 pure tetrachloride was decomposed by sodium carbonate, mixed with a 

 known excess of standard silver solution, and then titrated back with 

 ammonium sulphocyanate. The data given are as follows : 



Cl Found. Percent. Cl. 

 .1067 .076112 66.177 



.1258 .083212 66.146 



.2223 .147136 66.188 



.2904 .192190 66.182 



Mean, 66.173 



Hence, with Cl = 35.179, Ge = 71.933. If O = 16, Ge = 72.481. 



* Journ. fiir Prakt. Chem. (2), 34, 177. 1886. 



