A popular chemistry; . ish with a needle. The HN03 beingpoured on, dissolves the metal in the delicate linesthus laid bare. Nitrous Oxide, N20. — Preparation. —This gas ismade by heating ammonium nitrate (NH4N03), whichdecomposes into 2H20 and N20. (See p. 3 3.) Properties.—N20 is a colorless, transparent gas * The following experiments illustrate this property: 1. Mix equal parts of strong ITN03 and *. Place a little oil ofturpentine in a cup out-of-doors, and pour the mixture upon it at armslength. The turpentine will burn with almost explosive violence. 2. Pour dilute H~N03 upon bits of
A popular chemistry; . ish with a needle. The HN03 beingpoured on, dissolves the metal in the delicate linesthus laid bare. Nitrous Oxide, N20. — Preparation. —This gas ismade by heating ammonium nitrate (NH4N03), whichdecomposes into 2H20 and N20. (See p. 3 3.) Properties.—N20 is a colorless, transparent gas * The following experiments illustrate this property: 1. Mix equal parts of strong ITN03 and *. Place a little oil ofturpentine in a cup out-of-doors, and pour the mixture upon it at armslength. The turpentine will burn with almost explosive violence. 2. Pour dilute H~N03 upon bits of tin. Dense, red fumes (NO.,, nitricperoxide) will pass off, and the Sn will be converted into a white oxide,which furnishes what is termed putty powder. 3. Throw crystals of any nitrate on red-hot coals. They will deflagrateon account of the O which they give up to the fire. 4. Soak a strip of blotting-paper in a solution of niter. It will formtouch-paper, and when lighted will only smolder, NITROGEN. 33 Fig. Preparing N20. with a faintly sweetish taste and smell. It is some-what soluble in water, so that there is some losswhen it is collected over water. It supports com-bustion nearly aswell as 0, and manyof the experimentsordinarily per-formed with thatgas will be equallybrilliant with breathed for ashort time, it pro-duces a peculiarkind of intoxica-tion, often attended with uncontrollable laughter, and hence it has re-ceived the popular name of laughing gas. The effectsoon passes off. If taken for a longer time, it causesinsensibility, and is therefore valuable as an anaes-thetic in minor surgical operations, as in pulling teeth. Nitric Oxide, NO.—Preparation.—This gas may beprepared by the action of dilute HN03 on copperclippings. The flask (a, Fig. 9) will soon be filledwith red fumes, but a colorless gas will collect inthe jar over water. At the conclusion of the process,the flask will contain a deep blue solution of coppernitrate (Cu2N03). By filte
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Keywords: ., bookcentury1800, bookdecade18, booksubjectchemistry, bookyear1887
