An Elementary Experimental Chemistry

An Elementary Experimental Chemistry

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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. 1900 edition. Excerpt: ... every hydrochloric acid molecule is shown by analysis to be made up of hydrogen and chlorin; therefore in the 2000 molecules of hydrochloric acid there must be at least 2000 atoms of hydrogen. Now these 2000 atoms of hydrogen were originally in the 1000 molecules of hydrogen; therefore in these 1000 molecules there must be at least 2000 atoms, and thus each molecule must contain at least two atoms. In all the chemical investigations that have been made, nothing has ever been found that would seem to indicate that the hydrogen molecule contains more than two atoms; so we shall accept this number. Likewise each molecule of chlorin must contain at least two atoms. Number of Atoms in the Oxygen Molecule. It is proved by experiment that two volumes of hydrogen unite with one volume of oxygen to form two volumes of water vapor. Suppose, as before, that one volume contains 1000 molecules. We then have Each of the 2000 molecules of water vapor must contain at least one atom of oxygen; but these 2 000 atoms came from the 1000 molecules of oxygen; hence each oxygen molecule must contain at least two atoms. The only thing that makes us believe oxygen ever contains more than two atoms is the fact that, when a silent electric discharge is passed through dry oxygen gas, it decreases to two-thirds of its former volume. This is easily explained in the light of Avogadro's Hypothesis. Suppose, as before, one volume contains 1000 molecules. Then Oxygen Ozone Nothing is simpler than to believe that three oxygen molecules, each containing two atoms, have been broken up, and then reunited to form two molecules each containing three atoms. Hence ozone differs from oxygen in that it contains three atoms to the molecule instead of two. Thus we see that we have a very...show more

Product details

  • Paperback | 54 pages
  • 189 x 246 x 3mm | 113g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236582918
  • 9781236582911