Flame-Photometric Determination of the Dissociation Energies of the Alkaline-Earth Oxides

被引：42

作者：

Kalff, P. J. ^{[1
]}

Hollander, Tj. ^{[1
]}

Alkemade, C. Th. J. ^{[1
]}

机构：

[1] State Univ, Phys Lab, Utrecht, Netherlands

来源：

JOURNAL OF CHEMICAL PHYSICS | 1965年 / 43卷 / 07期

关键词：

D O I：

10.1063/1.1697126

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two independent methods for determining dissociation energies of CaO, SrO, and BaO from optical measurements of band and line intensities in CO-air flames are described. The emitter of the measured bands has been shown not to be hydroxide molecules or molecules containing more than one metal atom. From a comparison of the results for both methods it can be concluded that the value of the electronic partition function of the alkaline-earth oxide molecule is around 6. Recommended values for the dissociation energies are (in electron volts): 3.96 +/- 0.06, 4.11 +/- 0.06, and 5.00 +/- 0.10 for CaO, SrO, and BaO, respectively. A comparison with the literature data is given.

引用

页码：2299 / 2307

页数：9

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