Elements of Chemical Analysis, Inorganic and Organic

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Taylor & Walton, 1842 - Science - 309 pages
Excerpt from Elements of Chemical Analysis, Inorganic and Organic

The second chapter is devoted to the statement of the appearances produced by the principal reagents when applied to various chemical substances, the results being thrown into a series of tables, and is followed by a chapter containing full instructions for the performance of the qualitative analysis of every variety of substance. This last chapter includes the use in analysis of the mouth blowpipe.

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Page 296 - ELEMENTS OF CHEMISTRY, Including the actual state and prevalent doctrines of the Science. By the late EDWARD TURNER, MD Seventh Edition. Edited by JUSTUS LIEBIG, MD, PH.D., FRS, &c., Professor of Chemistry in the University of Giessen ; and WILLIAM GREGORY, MD, Professor of Chemistry in King's College, Aberdeen.
Page 299 - While we have given but a very imperfect sketch of this original and profound work, we have endeavoured to convey to the reader some notion of the rich store of interesting matter which it contains. The chemist, the physiologist, the medical man, and the agriculturist, will all find in this volume many new ideas and many useful practical remarks. It is the first specimen of what modern Organic Chemistry is capable of doing for Physiology ; and we have no doubt that from its appearance physiology...
Page 124 - ... necessary to dry it at common temperatures, by exposure to a surface of oil of vitriol in a close vessel. The oil of vitriol is most conveniently contained in a shallow basin, across the top of which are placed wires to support a piece of paper, on which the substance to be dried is strewed. The basin is placed on a level surface, and covered with a bell jar, having a ground bottom ; or, if necessary, under the receiver of an air-pump, in which a vacuum is maintained. Six or eight hours exposure...
Page 148 - The oxide of manganese is thrown into a flask containing 1£ oz. of strong hydrochloric acid, diluted with £ oz. of water, and a gentle heat applied. The sulphate of iron is gradually added in small quantities to the acid, so as to absorb the chlorine as it is evolved ; and the addition of that salt continued till the liquid, after being heated, gives a blue precipitate with the red prussiate of potash, and has no smell of chlorine, which are indications that the protosulphate of iron is in excess.
Page 187 - ... iron, however, contains a small quantity of iridium and rhodium, to separate which, after weighing the peroxide, it must be reduced by hydrogen gas. The reduced metal is treated with hydrochloric acid to dissolve iron, and the black undissolved portion is collected on a filter, ignited with exposure to air, and weighed ; its weight deducted from that of the peroxide of iron, previously obtained, leaves the quantity of the latter in a pure state. The solution, filtered from the precipitate by...
Page 300 - Animal Chemistry ; Or, Chemistry in its Applications to Physiology and Pathology. By JUSTUS LIEBIG, MD, Ph.D., Professor of Chemistry in the University of Giessen. Edited, from the Author's Manuscript, by WILLIAM GREGORY, MD, Professor of Chemistry in the University of Edinburgh.
Page 300 - ... for all beginners, we consider it as unequalled by any in the English language, and we even doubt whether there are any of the foreign manuals of an equal size which can venture to compete with it.
Page 215 - ... which is discovered by means of the red prussiate of potash. This salt gives a precipitate of Prussian blue with a salt of the protoxide of iron only, and not with a salt of the peroxide ; so long then as it produces a blue precipitate, protoxide of iron still exists in solution, and more chloride of lime must be added. In applying red prussiate as the test, it is convenient to have a plate spotted over with small drops of its solution, which are touched with a drop of the liquid to be tested,...
Page 148 - ... quantities to the acid, so as to absorb the chlorine as it is evolved, and the addition of that salt continued till the liquid, after being heated, gives a blue precipitate with the red prussiate of potash, and has no smell of chlorine, which are indications that the protosulphate of iron is present in excess. By weighing what remains of the sulphate of iron, the quantity added is ascertained ; say m grains. If the whole manganese were peroxide, it would require 317 grains of sulphate of iron,...
Page 82 - ... chalybeate. 4. If it restores the blue colour to litmus paper after boiling, it is alkaline. 5. If it possesses neither of the above properties in a marked degree, and leaves a large residue on evaporation, it is a saline water. The substances which commonly enter into the composition of a mineral water are— Adas,— Sulphuric, carbonic, phosphoric, silicic, hydrochloric (chlorides).

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