Wells's principles and applications of chemistry; . erature mustbe very carefully watched, and not allowedto rise so high as to occasion white vaporsin the flask, as, in such case, some injuriousproducts may be formed. The gas shouldbe collected in a gasometer, or receiver fiUed with water of a temperature ofabout 90; cold water absorbing considerable quantities of it. It is also ad-visable to allow the gas to remain for a little time over water before attempt-ing to respire it. The reaction which takes place in the production of protoxyd of nitrogenmay be explained as follows: Ammonia is a co
Wells's principles and applications of chemistry; . erature mustbe very carefully watched, and not allowedto rise so high as to occasion white vaporsin the flask, as, in such case, some injuriousproducts may be formed. The gas shouldbe collected in a gasometer, or receiver fiUed with water of a temperature ofabout 90; cold water absorbing considerable quantities of it. It is also ad-visable to allow the gas to remain for a little time over water before attempt-ing to respire it. The reaction which takes place in the production of protoxyd of nitrogenmay be explained as follows: Ammonia is a compound of nitrogen with hy-drogen. When the nitrate of ammonia is heated, the hydrogen of the am-monia combines with a part of the oxygen of the nitric acid to form water,whilst the nitrogen of the ammonia at the same time becomes oxydized at theexpense of another part of the oxygen of the nitric acid. The result is, thatthe whole of the nitrogen, both of the nitric acid and of the ammonia, is lib-erated in the form of protoxyd of nitrogen, thus :. Nitrate of ammonia. Protoi. nitrog. Water. NHa, XOs, HO becomes 2 NO+ 4 HO An ounce of nitrate of ammonia will furnish about 500 cubic inches of thisgas. 343. Properties.—Protoxyd of nitrogen is a transparent, colorlessgas, with a sweetish smell and taste. It is a heavy gas, its specific gravitybemg 1-52, or nearly the same as that of carbonic acid. It supports the com-bustion of many bodies with nearly the same energy and brilliancy as pure * Nitrate of ammonia is a white crystalline salt, which can be cheaply purchased ofdealers in chemicals, or can be easily made by neutralizing dilute nitric acid by carbonateof ammonia. In preparing exhilarating gas, not less than 6 or 8 ounces should be used. Questions.—^How is it prepared ? What is the chemical reaction involved in the pro-cess? What are its properties ? NITROGEN. 233 oxygen; and when mixed with an equal bulk of hydrogen, forms an explosivemixture. It is, however, easily di
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectchemistry, bookyear18
