Introduction to the study of chemical philosophy : the principles of theoretical and systematic chemistry / by William A. Tilden.

  • Tilden, William A. (William Augustus), Sir, 1842-1926.
Date:
1876
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Licence: Public Domain Mark

Credit: Introduction to the study of chemical philosophy : the principles of theoretical and systematic chemistry / by William A. Tilden. Source: Wellcome Collection.

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    the severance of an atom of hydrogen from each group, as represented in the following diagram H H I —C- i hi - H —C—H 1 H or H H H 1 1 H- -C—C—H H H The same process may be repeated ad infinitum. The number of hydrogen atoms in the first term of the series being 4, in the second 2x4 — 2, in the third 3x4—4, in the nth term the number will be 4n — (2n— 2), or 2n + 2. The most important series of hydrocarbons at present known are represented by the following general formulae :— Paraffins, or Marsh Gas Series, Gjjlign +2 Olefines, or Olefiant Gas Series, CnHSn Acetylene Series, C„Han_s Terpene Series, CnH2n_4 The lowest known term of the terpene series contains C]0. Benzene series, C„H,n_6. The lowest term of this series contains C6, it is called benzene, and is represented by the following graphic formula: H H C—C // X HC CH X / C = C H H s 2