The student's chemical pocket companion / by W. S. Jacobs, M.D.

  • Jacobs, William Stephen, 1770-1843.
Date:
1807
Catalogue details

Licence: Public Domain Mark

Credit: The student's chemical pocket companion / by W. S. Jacobs, M.D. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    [20] nated with Dipple's animal oil; it is also obtained from certain vegetables. Very pure ammoniac may be obtained by mixing equal parts of sal ammoniac, and quicklime in powder; this is put into a flask, to which a syphon is adapted; being exposed to heat, the volatile alkali comes over, and is re- ceived in vessels containing water, until ful- ly saturated; the muriatic acid of the sal ammoniac unites to the lime, and forms muriate of lime, while the ammoniac is disengaged in the form of alkaline gas, which is absorbed by the water, forming the caustic ammoniac. Alkaline gas is a combination of am- moniac and caloric ; it is improper for res- piration and combustion, and is lighter than atmospheric air. By mixing this gas with the oxygenated muriatic acid, water is produced. This is effected by the union of the oxygen of the acid, with the hydrogen of the alkali, while the azote is set at liberty, and the oxygenated acid is reduced to the state of common muriatic acid. OF ACIDS. Acids are formed by the combination of oxygen with certain bases.