. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. Evaporation from Small and Large Basins. Potassium Bicarbonate. Synonyms.—Bicarbonate of Potassium ; Bicarbonate of Potash. Fourth Synthetical Reaction.—Make a strong solution ofpotassium carbonate by heating in a test-tube a mixture of sev-eral grains of the salt with rather less than an equal weight ofwater. Through the cool solution pass carbonic acid gas slowlybut continuously; after a time a
. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. Evaporation from Small and Large Basins. Potassium Bicarbonate. Synonyms.—Bicarbonate of Potassium ; Bicarbonate of Potash. Fourth Synthetical Reaction.—Make a strong solution ofpotassium carbonate by heating in a test-tube a mixture of sev-eral grains of the salt with rather less than an equal weight ofwater. Through the cool solution pass carbonic acid gas slowlybut continuously; after a time a white crystalline precipitateof potassium acid carbonate or bicarbonate (KHC03) of thePharmacopoeia (Potassii Bicarbonas, U. S. P.) will be + H20 + C02 = 2KHC03 Potassium AVater. Carbonic Potassium carbonate. acid gas. bicarbonate. 72 THE METALLIC RADICALS. The carbonic acid gas for this operation is economically and con-veniently prepared from small lumps of marble, though it might beobtained from any carbonate ; thus the previous synthetical reactioncould be made available for this purpose, the carbonic acid gasevolved on the addition of the acetic acid to the potassium car
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