Technical Chemists' Handbook; Tables and Methods of Analysis for Manufacturers of Inorganic Chemical Products

Technical Chemists' Handbook; Tables and Methods of Analysis for Manufacturers of Inorganic Chemical Products

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ...are strictly followed, and that 1 litre of hydrochloric acid weighs T624 g. at 15 C. at 760 mm. pressure. 2. Carbon Dioxide.--Pass 20 litres of the gas, from which the HC1 has been removed by water, into an ammoniacal solution of barium chloride, heat this finally, filter the BaC03 and estimate this by igniting, or by converting it into BaS04, of which 1 g. =0-1885 g. CCv Cf. also below, sub H. 3. Steam.--Pass the gas through a weighed tube, containing pumice moistened with strong sulphuric acid, and before reweighmg remove the other gases by a current of air. H.--Electrolytic Chlorine. Examination for Carbon Dioxide.--Chlorine gas produced by means of gas carbon electrodes may contain up to 12 per cent, carbon dioxide. This 002 is estimated by Ferchland's process, as modified in Lunge's laboratory. A dry Bunte burette, the content of which (from tap to tap=v) is exactly known, is filled with the chlorine by passing this through for some time, the gas passing in from below, so as to rise regularly below the lighter air. When filled with the chlorine gas under atmospheric pressure, the burette is fixed in a clamp in a vertical position, and a level tube is attached by means of a strong rubber tube, filled with mercury to the bottom tap, which has a single bore. The rubber tube must be entirely filled with mercury, so that no air can get into the burette, and it is secured against slipping off by iron wire. When the bottom tap of the burette is opened, mercury enters into the burette and absorbs the chlorine, at first pretty quickly, but later on its surface is covered by a pellicle, which precludes further action. Then the bottom tap is closed, and by agitating the burette the complete absorption of the chlorine is effected. The sides of the...show more

Product details

  • Paperback | 54 pages
  • 189 x 246 x 3mm | 113g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236507746
  • 9781236507747