A Text-book of Chemistry: Intended for the Use of Pharmaceutical and Medical StudentsJ. B. Lippincott Company, 1894 - 950 pages |
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Page 76
... iodide of ammonium or cadmium is poured upon it and allowed to flow to and fro until the plate is uniformly coated . The plate is then immersed for about a minute in a bath of nitrate of silver containing thirty grains of the salt to an ...
... iodide of ammonium or cadmium is poured upon it and allowed to flow to and fro until the plate is uniformly coated . The plate is then immersed for about a minute in a bath of nitrate of silver containing thirty grains of the salt to an ...
Page 142
... iodide should not give a blue color ( chlorine ) . When the acid is diluted with two volumes of water and placed in a test - tube with a small piece of zinc , no color should be imparted to a loose plug of cotton moistened with lead ...
... iodide should not give a blue color ( chlorine ) . When the acid is diluted with two volumes of water and placed in a test - tube with a small piece of zinc , no color should be imparted to a loose plug of cotton moistened with lead ...
Page 152
... Iodide . Chlorine . Potassium Chloride . Iodine . The most important sources of iodine at the present time are the ... iodide , as follows : NaIO Sodium + Iodate . 3NaHSO Sodium Bisulphite . 3NaHSO4 + Nal . Sodium Bisulphate . Sodium ...
... Iodide . Chlorine . Potassium Chloride . Iodine . The most important sources of iodine at the present time are the ... iodide , as follows : NaIO Sodium + Iodate . 3NaHSO Sodium Bisulphite . 3NaHSO4 + Nal . Sodium Bisulphate . Sodium ...
Page 153
... iodide is then treated with copper sulphate and ferrous sulphate , which precipitate the iodine as cuprous iodide : 2NaI2CuSO4 + 2FeSO4 Sodium Iodide . Copper Sulphate . Cugl2 + Na2SO4 + Fe2 ( SO4 ) 3 . = Ferrous Sulphate . Cuprous Iodide ...
... iodide is then treated with copper sulphate and ferrous sulphate , which precipitate the iodine as cuprous iodide : 2NaI2CuSO4 + 2FeSO4 Sodium Iodide . Copper Sulphate . Cugl2 + Na2SO4 + Fe2 ( SO4 ) 3 . = Ferrous Sulphate . Cuprous Iodide ...
Page 155
... iodide ; the liquid will become dark in color , owing to separation of iodine . In stronger solutions the iodine would be precipitated . ( 2 ) To a portion of the iodine solution , diluted with water , add solution of starch ; a blue ...
... iodide ; the liquid will become dark in color , owing to separation of iodine . In stronger solutions the iodine would be precipitated . ( 2 ) To a portion of the iodine solution , diluted with water , add solution of starch ; a blue ...
Contents
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Common terms and phrases
acetic action added alcohol aldehyde alkali alkaloids ammonia ammonium aqueous solution arsenic barium benzene boiling bromine calcium carbon dioxide cent chemical chlorate chloric acid chloride chloroform color colorless combination compounds concentrated containing cooling copper crystalline crystals decomposed decomposition dilute dissolved distillation easily soluble elements ether evaporated fermentation ferric ferrous filter flame formed formula fusing grammes H₂O heat hydrate hydrocarbons hydrochloric acid hydrogen sulphide insoluble iodide iodine iron known latter lime liquid magnesium manganese mass melting mercury metal methyl mineral mixed mixture molecule neutral nitrate nitric acid nitrogen obtained occurs odor oxide oxygen phosphate phosphorus platinum potassium chlorate potassium hydrate powder prepared pressure prisms reaction readily reagent residue salt silver small quantity sodium carbonate soluble soluble in water specific gravity starch substance sulphate sulphur dioxide sulphuric acid taste temperature tion trioxide tube volatile volume washed yellow yields zinc
Popular passages
Page 903 - Next add 50 cc of the soda solution, or sufficient to make the reaction strongly alkaline, pouring it down the side of the flask so that it does not mix at once with the acid solution. Connect the flask with the condenser, mix the contents by shaking, and distil until all ammonia has passed over into the standard acid. The first 150 cc of the distillate will generally contain all the ammonia. This operation usually requires from forty minutes to one hour and a half.
Page 896 - To the filtered liquid (representing 5 grammes of opium) add 5 cc of alcohol and 25 cc of stronger ether, and shake the mixture ; then add the chloride of ammonium, shake well and frequently during half an hour, and set it aside for twelve hours.
Page 775 - Chinese oil of peppermint; colorless, acicular, or prismatic crystals, having a strong and pure odor of peppermint, and a warm, aromatic taste, followed by a sensation of cold when air is drawn into the mouth.
Page 553 - A mixture of hydrocarbons, chiefly of the methane series, obtained by distilling off the lighter and more volatile portions from petroleum, and purifying the residue.
Page 895 - ... minutes, and return the whole to the filter. When the liquid has drained off, wash the residue, as before, until the second filtrate measures 150 cc, and finally collect about 20 cc more of a third filtrate. Evaporate...
Page 474 - Antimony trioxide so prepared is "a heavy, grayish-white powder without odor or taste, and permanent in the air. "Almost insoluble in water, and insoluble in alcohol. Nitric acid fails to dissolve it, but it is readily soluble in hydrochloric acid without effervescence, and also in a warm solution of tartaric acid, or in a boiling solution of potassium bitartrate. When heated the oxide turns yellow, becoming white again on cooling...
Page 903 - The flask is then removed from the flame, held upright, and, while still hot, potassium permanganate dropped in carefully and in small quantities at a time, until, after shaking, the liquid remains of a green or purple color. After cooling, the contents of the flask are transferred to the distilling flask with...
Page 897 - Cc of water, filter the solution through a small filter, and wash the filter and residue with water, until all soluble matters are extracted, collecting the washings separately. Evaporate, in a tared capsule, first, the washings to a small volume, then add the first filtrate, and evaporate the whole to a weight of 10 Gm.
Page 896 - Now let the filter dry in the air, and pour upon it the liquid in the bottle, in portions, in such a way as to transfer the greater portion of the crystals to the filter. Wash the bottle, and transfer the remaining crystals to the filter, with several small portions of distilled water, using not much more than 10 cc in all, and distributing the portions evenly upon the filter. Allow the filter to drain, and dry it, first by pressing it between sheets of bibulous paper, and afterward at a temperature...
Page 896 - To the filtered liquid (representing 10 grm. of opium) add 10 cc of alcohol, and 50 cc of ether, and shake the mixture; then add the chloride of ammonium, shake well and frequently during half an hour, and set it aside for...