Rate constant for the reaction CH3CO.+ HBr and the enthalpy of formation of the CH3CO.radical

Gergely Kovács, A. Bencsura, S. Dóbé, T. Bérces, Ferenc Márta

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Pulsed laser photolysis coupled with time-resolved UV-absorption monitoring of CH3CO.radicals was applied to obtain the rate constant, k 1, for the reaction CH3CO.+ HBr → CH3C(O)H + Br (1); k 1(298 K) = (3.59 ± 0.23 (2σ))x10-12cm3molecule-1s-1. Utilization of k 1in a third law procedure has provided the standard enthalpy of formation value ofDf298(CH 3CO) = -10.04 ± 1.10 (2σ) kJ mol -1in excellent agreement with a very recent IUPAC recommendation.

Original languageEnglish
Pages (from-to)355-361
Number of pages7
JournalReaction Kinetics and Catalysis Letters
Volume86
Issue number2
DOIs
Publication statusPublished - Nov 2005

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Photolysis
Pulsed lasers
recommendations
photolysis
Enthalpy
Rate constants
pulsed lasers
enthalpy
methylidyne
Monitoring

Keywords

  • Bromination kinetics
  • CHCO;
  • Thermochemistry

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Rate constant for the reaction CH3CO.+ HBr and the enthalpy of formation of the CH3CO.radical. / Kovács, Gergely; Bencsura, A.; Dóbé, S.; Bérces, T.; Márta, Ferenc.

In: Reaction Kinetics and Catalysis Letters, Vol. 86, No. 2, 11.2005, p. 355-361.

Research output: Contribution to journalArticle

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AU - Dóbé, S.

AU - Bérces, T.

AU - Márta, Ferenc

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