The Vapor Pressure of Barium
- 1 October 1935
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 3 (10) , 627-631
- https://doi.org/10.1063/1.1749565
Abstract
The vapor pressure of barium has been determined for temperatures from 525 to 750°C by a method based on molecular effusion. The metal was obtained by decomposition of barium azide in vacuum. The evaporated deposits were determined by microtitration to about 10—8 mole. The values obtained for the pressure range from 5×10—5 to 2×10—2 mm. They are well represented by the equation: log p (in mm) = 6.99 — 8980/T. This corresponds to a latent heat of evaporation of 4.09×104 cal. mole.Keywords
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