﻿360 Prof. J. A. Wanklyn on some Reactions of 



duct which was produced by 1*3815 grm. of sodium, we have 



. Na per cent. =39*94. 

 Na per cent. =41*07, theory for Na H S. 



Experiment II. In this instance the sulphuretted hydrogen 

 was passed into the hydrated oxide of ethylene-sodium at an ele- 

 vated temperature, viz. at about 200° C. 



3*990 grms. of sodium were dissolved in 60 grms. of absolute 

 alcohol and the product dried at 225° C. Weight = 11*642 

 grms. Calculating the percentage of sodium from these data, 

 Na per cent. = 34*27. The theory for Na C 2 H 5 O is Na per 

 cent. =33*82. 



Next, a slow stream of sulphuretted hydrogen was passed over 

 the substance at 210° C. for about two hours. During the 

 passage of the gas there distilled out a quantity of liquid which 

 was condensed in a Liebig's condenser having a narrow tube. 



The distillate was weighed at intervals, 



(1) 6*5 grms. 



(2) 73 „ 



(3) 7-4 „ 



(4) 7-45 „ 



until it became constant. The solid residue was also weighed. 

 Weight of solid residue =9*772 grms. 



On referring to the foregoing, it will be seen that this 9*772 

 grms. of product was made from 3*990 grms. of sodium. There- 

 fore Percentage of sodium found =40*83. 

 Theory for Na H S . . =4107. 



The distillate (7*45 grms.) was examined. It was alcohol, 

 and boiled at 77° C. with the utmost constancy quite to dryness. 

 The theoretical yield of alcohol, according to the equation 



NaC 2 H 7 SO = NaHS + C 2 H 6 0, 



requires that 7*98 grms. should have been obtained. The quan- 

 tity 7*45 grms. got in the above experiment is a very good ap- 

 proximation to it, regard being had to the inevitable loss inse- 

 parable from a determination of this kind. 



Hydrochloric Acid Gas and Hydrated Oxide of Ethylene-sodium. 

 There is very energetic action between these materials, the 

 generation of heat being so great that it is necessary to cool the 

 apparatus with cold water. 



The resulting solid, which is white and amorphous, is tolerably 

 stable. 



Na employed . . . = 3*5820 grms. 

 Na C 2 H 5 O produced . = 10*418 „ 

 HC1 + Na C 2 H 5 O given =16*148 „ 



