Vapor Pressures, Heats of Vaporization, and Entropies of Some Alkali Halides
- 1 September 1944
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 12 (9) , 362-369
- https://doi.org/10.1063/1.1723958
Abstract
Vapor pressures of crystalline KCl, KBr, KI, and NaCl have been measured in the pressure range of 10−1 to 10−7 mm by a surface ionization method. Heats and entropies of vaporization are calculated from the data. The heats of vaporization at 0°K and entropies at 298°K are also calculated. From the data, saturated KCl vapor is shown to be less than 2 percent associated at 800°K and the heat of dissociation of (KCl)2 is shown to be less than 47 kcal.Keywords
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