THE VAPOR COMPOSITION AND VAPOR-PRESSURE OF ZNSE FROM A MODIFIED KNUDSEN TECHNIQUE BETWEEN 1190 AND 1310 K

Authors
SCHONHERR E FREIBERG M SICHE D HARTMANN H
Citation
E. Schonherr et al., THE VAPOR COMPOSITION AND VAPOR-PRESSURE OF ZNSE FROM A MODIFIED KNUDSEN TECHNIQUE BETWEEN 1190 AND 1310 K, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(11), 1996, pp. 1766-1771
Citations number
14
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
100
Issue
11
Year of publication
1996
Pages
1766 - 1771
Database
ISI
SICI code
0005-9021(1996)100:11<1766:TVCAVO>2.0.ZU;2-S
Abstract
Solid ZnSe is evaporated from Knudsen cell in vacuum. The effective mo lecular weight of the ZnSe vapor is directly determined by weighing th e cell and without effusion taking place. The rate of effusion is adju sted by a moveable furnace. An effective molecular weight of 135 +/- 5 g/mol is found for temperatures between 1190 and 1310 K. The weight i ndicates the complete dissociation of the sublined ZnSe into Zn and Se -2 vapor. In that temperature range, the total equilibrium vapor press ure of solid ZnSe is estimated from the recoil force according to log( 10)(P/kPA) = -(12896 +/- 96)K/T+(9,19 +/- 0.08).