Flame-Photometric Determination of the Dissociation Energies of the Alkaline-Earth Oxides
- 1 October 1965
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 43 (7) , 2299-2307
- https://doi.org/10.1063/1.1697126
Abstract
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.Keywords
This publication has 16 references indexed in Scilit:
- Alkaline-earth oxide formation in flamesCombustion and Flame, 1965
- Dissociation energies and excitation levels of alkaline-earth oxidesJournal of Quantitative Spectroscopy and Radiative Transfer, 1964
- Mass spectrometric determination of the dissociation energy of the molecules MgO, CaO, SrO and Sr2OTransactions of the Faraday Society, 1964
- Mass-spectrometric studies of the vaporization of the sulphides of calcium, strontium and barium. The dissociation energy of S2 and SOTransactions of the Faraday Society, 1964
- A contribution to the application of flame photometry on Ca, Sr, Ba and LiApplied Scientific Research, Section B, 1956
- Band Spectra Emitted by Strontium and Barium in Arcs and FlamesProceedings of the Physical Society. Section A, 1956
- Green and orange band spectra of CaOH, CaOD and calcium oxideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1955
- A New Identification of the Flame Spectra of the Alkaline-Earth MetalsNature, 1955
- Thermochemical dissociation energies of gaseous calcium, strontium and barium oxidesTransactions of the Faraday Society, 1951
- The Band-Spectrum of Barium OxideProceedings of the Physical Society. Section A, 1950