480 REPORT—1868. 
appeared as caustic soda in the washings; 34 cub. centims. standard oxalic : 
acid were required to neutralize this caustic soda, which must therefore be 
added to the cub. centims. standard acid required to neutralize sodium left in 
the amalgam. For the latter purpose 391-6 cub. centims. were required. 
Therefore 391°6+34, or 425-6 cub. centims. are equivalent to sodium which 
remained in amalgam, which was therefore 9°79 grms. 
22. Now the weight of amalgam used was 1420°8 grms., and it contained 
1-631 per cent. sodium. 
Hence we have 
Whole Na in amalgam 
Na left in amalgam 
23°18 grms. 
9-79 
-, Sodium used in reaction = 13°39 erms., and 
Na as ethylcarbonate = 5°70 185, 
3? 
-. Na in organic salts 
Hence, of the sodium used in reaction, 
42:57 = percentage converted into ethylcarbonate, and 
67:43 = By ss forganic salts. 
23. In the manner before described, "the weig ight_of organic salts was found 
to be 23:34 grms. 
Now 5:7 grms. sodium are equivalent to 27:76 sodium ethylcarbonate. 
Therefore, from 13°39 grms. sodium were obtained 
23-34 grms. organic salts, and 
27:76 grms. sodium ethylearbonate. 
Hence from 100 grms. sodium would be obtained 
1743 grms. organic salts, and 
207'3 grms. sodium ethylearbonate ; 
or, in round numbers, 175 grms. organic salts are obtained from 100 grms. 
sodium. 
24. As before, the acids were liberated from 19:59 grms. of the organic 
salts, the remaining 3:75 grms. being used for other purposes. The volatile 
acids, after redistillation, required for neutralization 55-9 cub. centims. 
standard caustic soda, or 1:285 grm. Na. 
Now, since 23°34 grms. of the organic salts contained 7-69 grms. Na, 
19-59 grms. contained 6-476 grms. sodium, of which, as we have found, 
1-285 grm. were in salts of volatile acids. 
Therefore 
19:85 = percentage of sodium in salts of volatile acids, and 
80°15 = oy » fixed acids. 
25. The weight of sodium-salts of Sil acids was found to be 4:08 grms. 
Hence, as the weight of the mixture of salts of fixed and volatile acids 
was 19°59 grms., 
Weight of sodium-salts of fixed acids = 15:51 grms. 
Therefore, of the total organic salts, 
20°82 per cent. were salts of volatile acids, and 
7°69 grms. 
79°18 + 3 fixed acids. 
26. Hence we have the following results :— 
Na as ethylearbonate .... 42°57 per cent. 
Na in organic salts ...... 5743 oy, 
Na in salts of volatile acids 19°85 
- Na in salts of fixed acids 80:15 
3) 
7 
