The Philippine journal of science . (mercuric nitrate in nitric acidsolution), it is decomposed to give nitrogen and carbon dioxide and thissame reagent has no effect on ammonia or ammonium salts. As is well Imovm, hypobromites in alkaline solution decompose ureainto carbon dioxide and nitrogen, the carbon dioxide being absorded; theyalso decompose ammonia, liberating nitrogen. The reactions may berepresented by the following equations: In acid solution ivith mercuric nitrate.— CO(]SrH2)„-f30—> C02-fN„+2H20 In alkaline solution with hypolromites. C0(NH„)„+30—> CO„+ 2NH3+36 —>
The Philippine journal of science . (mercuric nitrate in nitric acidsolution), it is decomposed to give nitrogen and carbon dioxide and thissame reagent has no effect on ammonia or ammonium salts. As is well Imovm, hypobromites in alkaline solution decompose ureainto carbon dioxide and nitrogen, the carbon dioxide being absorded; theyalso decompose ammonia, liberating nitrogen. The reactions may berepresented by the following equations: In acid solution ivith mercuric nitrate.— CO(]SrH2)„-f30—> C02-fN„+2H20 In alkaline solution with hypolromites. C0(NH„)„+30—> CO„+ 2NH3+36 —> N2+ CO(]SrH2)2.+3NaOBr+2NaOH —> 3NaBr+Na„C03+]sr2+3H20 2NH3+31SraOBr —> N„+3NaBr-f SH^O. The gas evolved by reason of the action of urea on an alkaline hypo-bromite solution is nitrogen. Both nitrogen and carbon dioxide aregiven off by the action of urea on the acid mercuric nitrate solutionand as they are evolved in equal volumes, half of the gas obtained is AMMONIA COEFFICIENT OF UKINES. 155. Fig. 1. 156 BACON. nitrogen. Ammonia^ as stated above, has no effect on this reagent,whereas with the hypobromite solution the ammonia is also oxidized tonitrogen. Consequently, by oxidizing a solution containing ammoniaand urea in two separate pieces of apparatus and noting the amountof gas obtained after the action of each reagent, it becomes a simplematter of calculation to ascertain the respective quantities of urea andammonia in the original solution. I have devised the following simpleform of apparatus for carrying out these determinations. (See fig. 1.) Two pieces of apparatus are used. A is a tube holding 10 cubic centimeters,graduated in B is a glass bulb having a capacity of 20 cubic tube G of about 1-millimeter bore leads from the top of the latter to thegraduated eudiometer below. To avoid making the apparatus inconvenientlylong I have inserted a gas chamber just below the zero mark F of the eudiom-eter; this in the a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1906
