Wells's principles and applications of chemistry; . at magazine of it in nature is rock, or commonsalt, which is a compound of chlorine and the metalsodium. Combinations of it also with other substancesin the mineral kingdom are not uafrequent. In the or-ganic kingdom it is found as a constituent of both an-imals and vegetables; existing in the greater numberof animal liquids, and in various fluids and secretionsof plants. 350. P r c p a r a t i 0 n.—Chlorine is most easily pre-pared by pouring strong hydrochloric (muriatic) acidupon pulverized binoxyd of manganese contained in aglass retort o
Wells's principles and applications of chemistry; . at magazine of it in nature is rock, or commonsalt, which is a compound of chlorine and the metalsodium. Combinations of it also with other substancesin the mineral kingdom are not uafrequent. In the or-ganic kingdom it is found as a constituent of both an-imals and vegetables; existing in the greater numberof animal liquids, and in various fluids and secretionsof plants. 350. P r c p a r a t i 0 n.—Chlorine is most easily pre-pared by pouring strong hydrochloric (muriatic) acidupon pulverized binoxyd of manganese contained in aglass retort or flask (arranged as in Fig. 113), and ap-plying a gentle heat from a spirit-lamp. Tlio propor-tions which givo the best result are, one part by weight Questions.—TIow is it ? Give the history of chlorine. To what othor oK-ments is chlorine allied ? What are the charucteriHtics of these associatoil olomcnts?What designation is given to them as a class ? What is said of the distrihutiou of chlor-ine in nature ? llow is it prepared ?. 236 INOKGANIC CHEMISTBT. of biuoxyd of manganese, and tvro parts by weight of hydrochloric acid. Thegas may be collected over water, or ?more conveniently by the displacementof air in a dry, narrow-necked jar, as is represented in Fig. 113. The green-ish color of the chlorine enables the operator to determine when the receiveris full. By closing the jars with glass stoppers, Well smeared with tallow, thogas can be preserved unaltered for a considerable length of time.* The chemical reaction which takes place in tliis process may be explainedas follows: hydrochloric acid is a compound of hydrogen and chlorine; whenmixed with the binox3d of manganese in the proportion of 2 equivalents ofthe former to 1 of the latter, double decomposition ensues:—water, freochlorine, and a chloride of the metal being produced. Thus,—Mn024-2HCl=MnCl+2IiO-|-Cl. Three ounces of pov/dered binoxyd of manganese with half a pint of com-mercial muriatic aci
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectchemistry, bookyear18
