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Vapor Pressure of Mercury, 0 to 35° C.—The disagreement among the results obtained by previous observers for this range of temperature suggested the need for a direct determination of the vapor pressures with a Knudsen gauge. Impurities were eliminated by numerous distillations in a system cut off from the pump by a liquid air trap, and the slight amount of residual gas was corrected for. The readings obtained at 19 temperatures lie near a smooth curve which, it is believed, gives the vapor pressures to within 3 per cent. The values for 0, 10, 20, and 30° C. are, respectively,.000350,.000775,.00182 and.00407 mm. of Hg, considerably higher than those obtained by Knudsen in 1909, but agreeing fairly well with Morley's results up to 15°, and at higher temperatures with values extrapolated from the results of Ramsey and Young
The paper's table VI gives the vapour pressure of mercury in mm Hg (Torr) from 0°C to 40°C every 2°C
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Mercury, Vapor pressureShowing 2 featured editions. View all 2 editions?
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Published in
Urbana, Ill
Edition Notes
reprint of
Hill, Charles F. (1922): Measurement of Mercury Vapor Pressure by Means of the Knudsen Pressure Gauge. Phys. Rev. 20, 259–266
recent Hg vapour pressure measurements:
http://www.nist.gov/cstl/analytical/inorganic/hgvaporpressure.cfm
review on Hg vapour pressure measurements:
http://www.boulder.nist.gov/div838/SelectedPubs/NISTIR.6643.pdf
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