Transactions of the Electrochemical Society Volume 20

Transactions of the Electrochemical Society Volume 20

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...formula enables a and H to be calculated. H (a2--x2)--ux 2 Ueber partielle Wiedervereinigung dissocierter Gase im Verlauf ciner Abkuhlung. Inaugural Dissertation, Gottingen, 1906. Ann. Phys. 14, 334 (1904). 4 Zeit. anorg. Chem. 49, 224 (1906). Lunge's method. This equation, as well as those given below, was deduced theoretically. The details of the calculation will not be gone into here; let it suffice to say that H is related to the ordinary velocity coefficient k as follows: H= T, j de where k is the velocity coefficient in the element of volume de T is the temperature (absolute) in the element of volume Tz is room temperature (absolute). Second Method. The glower was placed in a vessel of about one liter capacity containing dry air. After glowing the filament for a period of time ranging from 4 to 43 hours, it was allowed to cool and the gas was then drawn out of the vessel through an absorption tube containing sulfuric acid. The nitric oxide was determined as before. The values of a and H were then calculated from the following equation V, a + x f = In 2Ha a--x where t = time during which the filament is heated V = volume of air in the vessel H, a and x have the same significance as before. The temperature of the filament was determined by measurement of the luminosity in candle-power per square mm. of surface, and the application of Rasch's equation (see below). The numerical results are briefly summarized in the following table: Experiment No 32-34 40 22-27 41 35-36 42 Filament No 8 9 5 9 8 9 To (abs.) 2320 2358 2373 2380 2395 2426 1000 a 2.36 3.64 4.35 4.49 6.51 7.42 1000 xt 12.8 13.8 14.2 14.4 14.9 15.7 H per cm. of filamept 7.2--6.2--3.4--1,000 a is the amount of nitric oxide (in c.c. per liter) present when more

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  • Paperback | 152 pages
  • 189 x 246 x 8mm | 286g
  • United States
  • English
  • black & white illustrations
  • 1236945034
  • 9781236945037