Elements of Modern ChemistryJ.B. Lippincott, 1884 - 770 pàgines |
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Elements of Modern Chemistry (Classic Reprint) Charles Adolphe Wurtz Previsualització no disponible - 2017 |
Frases i termes més freqüents
acetic acid action alcohol aldehyde alkaline ammonia ammonium anhydride antimony arsenic arsenious oxide atom of oxygen atoms of chlorine atoms of hydrogen barium benzene body boiling bromine calcium carbon dioxide carbon monoxide carbonic acid CH³ charcoal chloride CO.OH color combination combustion composition compounds concentrated condensed constitution contains converted cooling copper crystalline crystals decomposed decomposition Density compared deposits dilute disengaged dissolves distillation elements ether ethyl ethylene ferric ferrous formed formula fusible gases glycol heated hydrate hydriodic acid hydro hydrochloric acid hydrogen sulphide insoluble iodide iodine iron isomeric latter lime manganese mass melts mercury metal mixture molecules of water nitrate nitric acid nitrogen obtained odor oxalic oxide oxygen phosphoric acid phosphorus platinum potassium chloride potassium hydrate powder precipitate prisms produced properties reaction salt saturated silver small quantity sodium soluble in water solution of potassium sulphuric acid temperature tion tube vapor water of crystallization yellow zinc
Passatges populars
Pàgina 37 - The same number of atoms combined in the same manner produce the same crystalline form ; the crystalline form is independent of the chemical nature of the atoms, and is only determined solely by their number and mode of combination.
Pàgina 614 - It may be prepared by treating the solution of this extract with basic acetate of lead, filtering, freeing the filtrate from excess of lead by hydrogen sulphide, and evaporating the solution at a gentle heat until it crystallizes. The crystals are separated from the mother liquor, and alcohol added to the latter precipitates a fresh quantity of creatine.
Pàgina 29 - ... also between the sum of the volumes of the combining gases and the volume occupied by the compound itself, measured in the gaseous state.
Pàgina 30 - Avogadro's principle or hypothesis, which states that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules, was the extension of Dalton's Atomic Theory necessary to put the theoretical interpretation of chemistry on a solid foundation.
Pàgina 34 - A calorie, the heat unit used in connection with the metric system of weights and measures, is the amount of heat required to raise the temperature of one kilogramme of water one degree centigrade from the temperature of water at its maximum density, or about 4° C.
Pàgina 453 - Kt(CAr)tFc, which is also known as rcd prussla tc of potash, is formed when a current of chlorine is passed into a solution of potassium ferrocyanide. Potassium chloride and potassium ferricyanide are formed, and the latter gives to the liquid a deep-brown color. On evaporation, it deposits the new salt, which is purified by a second crystallization. Potassium chloride remains in the mother liquor. The process of formation may be expressed by the following equation : Potassium ferricyanide forms...
Pàgina 272 - ... the metallic nitrates are (1) they deflagrate when thrown upon incandescent charcoal ; (2) when brought in contact with concentrated sulphuric acid they evolve white vapors of nitric acid ; (3) when mixed with copper filings and then treated with concentrated sulphuric acid, red vapors are evolved. When the solution of a nitrate is mixed with its own volume of concentrated sulphuric acid, and a crystal of ferrous sulphate is introduced into the liquid, the crystal very soon assumes a brown color,...
Pàgina 228 - ... the mass and kind of matter heated, and with the rapid or gradual evolution of the heat. When the evolution of heat is instantaneous, the resulting temperature may be calculated from the quantity of heat evolved, and the mass and specific heat, &c., of the matter heated. By a unit of heat is meant the quantity of heat necessary to raise the temperature of one kilogramme of water one degree centigrade, or more accurately from 0° to 1°.
Pàgina 35 - The specific heat of a body is the ratio of the quantity of heat required to raise (the temperature of) that body one degree, to the quantity required to raise (the temperature of) an equal weight of water one degree.
Pàgina 705 - ... blue coloration of the liquid when left in contact with the air or treated with sulphuric acid. In India, indigo is prepared from the stems and leaves of the indigofera, collected at the time of flowering. The stems and leaves are macerated with water in vats, where they are allowed to ferment. After 12 or 15 hours the liquid is drawn off into other vats, where it is thoroughly stirred to bring it, as much as possible, in contact with the air, an operation that produces a blue precipitate. The...