Identifier: philtrans02710483 (find matches)
Title: The Combining Volumes of Hydrogen and Oxygen
Year: 1916 (1910s)
Authors: Burt, F. Edgar, E.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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combiningvolumes could be calculated. For measuring the gases at 0 C, and 760 mm. pressure, the method was the sameas that used by Geay and Buet(^^) for the volumetric analysis of hydrogen chloride.In fact, some parts of the original apparatus were kindly lent to us by Dr. Gray.The measuring pipette (fig. 4) consisted of a thick-walled glass bulb, A, of about300 c.c. capacity, sealed to capillary tubes at either end of its vertical diameter.The lower capillary expanded into the dead-space, B, which was furnished with aglass point. The upper capillary, after a right-angle turn, led to the 3-way tap, C.The pressure of gas in the bulb was registered by the vertical distance between themercury surface in the dead-space and the mercury surface in the upper chamber, D,of the manometer, which communicated with the dead-space as shown in the figure.The upper chamber of the manometer, of the same diameter as the dead-space VOL. ccxvi.—A. 3 I 402 DE. F. P. BURT AND DE. E. C. EDGAR ON TO PUMP
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THE COMBINING VOLUMES OF HYDEOGEN AND OXYGEN. 403 (1*6 cm.), was also provided with a glass point. The vertical distance between theglass points was very nearly 760 mm., and this distance was maintained constant bymeans of a stout glass rod sealed at its upper end to the manometer chamber and atits lower to the elbow of the capillary connecting the bulb and the 3-way tap. Thewhole apparatus was rigidly Jfixed to a. heavy iron bar with a tripod base, and the topof the bar was clamped to a staple driven into the ceiling. Any displacement fromthe vertical could be detected by the plumb-line, E, E, and corrected by means oflevelling screws in the tripod base. The manometer head communicated with amercury pump through the tap F, and the phosphoric oxide tube, G, so that the vacuumcould be verified from*time to time. Sealed to the capillary between the bulb andthe 3-way tap was a capillary T-piece expanding into a tube of a few cubic centimetrescapacity, H, which terminated at its lower end

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