Wells's principles and applications of chemistry; . • India-rubber gas-bags, with metal pipes, , etc., are prepared especially forthis purpose by dealers in chemical apparatus. A tobacco-pipe atUched to the India-rubber delivery-tube of a gasometer may also be employed. Questions.—What of its tenuity and smallness of particles? What aro some of these properties ? Why has hydrogen been chosen as tho unit of tho scale ofequivalents ? What is said of fho inflammability of hydrogen ? 204 INORGANIC CHEMISTRY,. A jet of hydrogen bums with a bluish white flame, and a feeble l
Wells's principles and applications of chemistry; . • India-rubber gas-bags, with metal pipes, , etc., are prepared especially forthis purpose by dealers in chemical apparatus. A tobacco-pipe atUched to the India-rubber delivery-tube of a gasometer may also be employed. Questions.—What of its tenuity and smallness of particles? What aro some of these properties ? Why has hydrogen been chosen as tho unit of tho scale ofequivalents ? What is said of fho inflammability of hydrogen ? 204 INORGANIC CHEMISTRY,. A jet of hydrogen bums with a bluish white flame, and a feeble light. Theexperiment can be shown by adapting to the cork of a flask from which hy-!FiG. 98. drogen is evolved, a piece of pipe-stem, or a small glass tubedrawn out to a point. (See Fig. 98.) If a dry, cold tumbler be held over a jet of burning hydro-gen, its interior will rapidly become covered with a copiousdeposition of moisture. This results from a condensation ofthe vapor of water produced by the union of the hydrogenwith the oxygen of the atmosphere. 296. Explosion of Mixed Oxygen and Hy-drogen .—If the hydrogen before being kmdled is mixedwith air sufficient to burn it completely, or with between twoand three times its volume, and then ignited, combustion takesplace instantaneously throughout the whole mass, and is attended with a vio-lent explosion. Hence particular caution is necessary in using hydrogen toavoid the slightest admixture of common air. When pure oxygen is substituted in the place of air, the explos
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectchemistry, bookyear18
