50 Dr. Kane on the Compounds of Ammonia. 



hf But the chlorine being as chloride of zinc, and the remainder of the deficiency 

 being oxide of zinc, the composition of the whole may be easily calculated, and 

 there is found 



d. 10.01 + zw 9.13 = 19.14 = zncl 

 o . 13.07 + zn 52.77 = 65.84 = zno 



15.02 = HO 



100.00 



But — — - = 5.78. q.p. 6. And — = — '- — , or 6ho. Hence the empirical 

 9,13 ^ ^ 15 53.2' ^ 



formula is zncl -\- 6 zno -{■ 6 ho. 



When this oxychloride is dried at the temperature of the air, it retains a 

 much larger quantity of water, in fact nearly double as much, since quantities of 

 the powder so prepared, gave, when dried, from 23.5 to 23 per cent, of water, 

 To establish an accurate proportion, however, the following analysis was made : 



B, 2.078 of the oxychloride, prepared by the action of water on the body 

 NH3.ZWC?, and dried without exposure to heat, gave, when dried by the spirit- 

 lamp, 1.590 of a greyish residue, corresponding to 76.51 per cent. ; hence 23.49 

 water. 



The residue was dissolved in nitric acid, and precipitated by nitrate of silver; 

 the chloride of silver produced was collected, washed, and dried, when it weighed 

 0.690, or 33.21 per cent., containing 8.29 per cent, of chlorine. 



The zinc being determined in the same manner as that before described, 

 there results that to the same chloride and oxide of zinc, there were in this body 

 united ten atoms of water in place of six ; and hence the formulas of these oxy- 

 chlorides are : 



Dried at 212°. Experiment. 



cl = 35.42 9 74 10.01 



Tzn = 226.10 62.20 



6o = 48.00 13.20 



6ho = 54.00 14.86 15.02 



363.52 100.00 



