Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . Preparation of Hydrogen. In making larger quantities bottles 01 appropriate size may beemployed. Other metals, notably potassium and sodium, liberate hydrogen themoment they come into contact with water; but the processes arenot economical. Properties Like oxygen, hydrogen is invisible, inodorous, and tasteless. If made with iron it has a strong smell, but thisis due to impurities contained in the
Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . Preparation of Hydrogen. In making larger quantities bottles 01 appropriate size may beemployed. Other metals, notably potassium and sodium, liberate hydrogen themoment they come into contact with water; but the processes arenot economical. Properties Like oxygen, hydrogen is invisible, inodorous, and tasteless. If made with iron it has a strong smell, but thisis due to impurities contained in the metal. Apply a flame to the mouth of the delivery-tube (care beingtaken that the gas is coming off briskly—a guarantee that noair remains in the generating vessel) ; ignition of the hydrogenensues, showing that, unlike oxygen, it is combustible. Immerse a lighted match into a tube (or wide-mouthedbottle) containing hydrogen ; the gas is ignited, but the matchbecomes extinguished. This shows that hydrogen is not a sup-porter of combustion. Hydrogen in burning unites with the oxygen of the air andforms water, which may be condensed on a cool glass or othersurface. Prove this by holding a gla
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