Investigation of the Gas-Phase Kinetics of the Reaction K + SO₂ + Ar

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Article on an investigation of the gas-phase kinetics of the reaction K + SO₂ + Ar.

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3 p.

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Goumri, Abdellatif; Laakso, Dianna; Rocha, John-David Ray; Francis, Elizabeth & Marshall, Paul May 1993.

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Article on an investigation of the gas-phase kinetics of the reaction K + SO₂ + Ar.

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3 p.

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Abstract: The recombination of atomic potassium, K(4²S), with SO₂ has been investigated at about 863 K, in a bath of Ar at pressures from 20 to 690 mbar. K was generated by flash photolysis of KI vapor and monitored by time-resolved resonance absorption of a ᴅ-line at 766 nm under pseudo-first-order conditions. The measured pseudo-second-order rate constants lie in the low-pressure and falloff regions and were fitted with an empirical RRKM expression to yield k₀ = 5.9 x 10⁻²⁹ cm⁶ s⁻¹ and k∞ = 6.2 x 10⁻¹⁰ cm³ s⁻¹. Error limits are discussed in the text. The KSO₂ adduct was characterized by ab initio methods. An RRKM analysis of k₀, together with a lower limit to the equilibrium constant, yielded a K-SO₂ bond strength of 190 ± 10 kJ mol⁻¹. k∞ was shown to be consistent with a simple harpoon model for electron transfer.

Reprinted with permission from the Journal of Physical Chemistry. Copyright 1993 American Chemical Society.

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  • Journal of Physical Chemistry, 1993, Washington D.C.: American Chemical Society, pp. 5295-5297

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  • Publication Title: Journal of Physical Chemistry
  • Volume: 97
  • Issue: 20
  • Page Start: 5295
  • Page End: 5297
  • Pages: 3
  • Peer Reviewed: Yes

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  • May 1993

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  • April 25, 2015, 8:59 p.m.

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Goumri, Abdellatif; Laakso, Dianna; Rocha, John-David Ray; Francis, Elizabeth & Marshall, Paul. Investigation of the Gas-Phase Kinetics of the Reaction K + SO₂ + Ar, article, May 1993; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc503247/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.