Chemical News and Journal of Physical Science, Tom 99Chemical news office., 1909 |
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Strona 7
... solution gently for one hour longer . Then allow the temperature of the solution to fall to about 50 ° or 60 ° , dilute freely , through the condenser , with cold water , acidify with nitric acid , add a moderate excess of silver ...
... solution gently for one hour longer . Then allow the temperature of the solution to fall to about 50 ° or 60 ° , dilute freely , through the condenser , with cold water , acidify with nitric acid , add a moderate excess of silver ...
Strona 14
... solution rather more quickly than the chloride . Diazoiodide solutions even when very dilute decompose much quicker , and nitrobenzene diazonium solutions also decompose rather more quickly in very concentrated solu- tions ; acids do ...
... solution rather more quickly than the chloride . Diazoiodide solutions even when very dilute decompose much quicker , and nitrobenzene diazonium solutions also decompose rather more quickly in very concentrated solu- tions ; acids do ...
Strona 16
... solution , an equivalent amount of hydrogen being set free . The resulting ferrous hydroxide in solution betrays its presence by producing a pink coloration with the phenolphthalein indicator . In every experiment made the pink colour ...
... solution , an equivalent amount of hydrogen being set free . The resulting ferrous hydroxide in solution betrays its presence by producing a pink coloration with the phenolphthalein indicator . In every experiment made the pink colour ...
Strona 17
... solution of copper sulphate , a ten- second immersion is sufficient to plate it with a distinctly visible coating of copper which cannot be wiped off . similar polished strip of steel which has been soaked over- night in a concentrated ...
... solution of copper sulphate , a ten- second immersion is sufficient to plate it with a distinctly visible coating of copper which cannot be wiped off . similar polished strip of steel which has been soaked over- night in a concentrated ...
Strona 19
... solutions to retain gas in solution : he alluded to the solubility of nitrogen in blood - serum . He under- stood from Dr. Senter that the subject is being investigated by Dr. Findlay . 272. " The Formation and Reactions of Imino ...
... solutions to retain gas in solution : he alluded to the solubility of nitrogen in blood - serum . He under- stood from Dr. Senter that the subject is being investigated by Dr. Findlay . 272. " The Formation and Reactions of Imino ...
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Strona 138 - That no article shall be deemed misbranded, or adulterated within the provisions of this act when intended for export to any foreign country and prepared or packed according to the specifications or directions of the foreign purchaser when no substance is used in the preparation or packing thereof in conflict with the laws of the foreign country to which said article is intended to be shipped...
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Strona 134 - Illustrations. l6s. net. THE CHEMISTRY OF INDIA RUBBER. A" Treatise on the Nature of India Rubber, its Chemical and Physical Examination, and the Determination and Valuation of India Rubber Substitutes. Including the Outlines of a Theory on Vulcanisation. BY CARL OTTO WEBER, PH.D. " Replete with scientific and also with technical interest. . . . The section on physical properties is a complete resume of every thing known on the subject.
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Strona 138 - November 18, 1908, and continuing five days. At this hearing those who favored the bleaching process and those who opposed it were given equal opportunities to be heard.
Strona 60 - For full information, inquiries should be addressed to the Registrar. Fellows and Associates are invited to communicate with the Registrar in any instance in which they are able to assist in securing appointments for qualified chemists.
Strona 134 - Journal. LONDON : CHARLES GRIFFIN & CO., LIMITED. EXETER STREET. STRAND THIRD EDITION. In Handsome Cloth. Fully Illustrated. 21s. net. PRINCIPLES AND PRACTICE OF BREWING. FOR THE USE OF STUDENTS AND PRACTICAL MEN. BY WALTER J. SYKES. REVISED BY ARTHUR R. LING, FIC, FCS, Editor of the Journal of the Institute of Brewing.
Strona 33 - ... been added, a pink color is developed. If the solution is allowed to stand perfectly quiet it will be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions and thus indicates the negative poles. Many persons who are interested in the metallurgical problems connected with the iron and steel industry may not be familiar with the modern theory of indicators, and therefore...