KINETIC-STUDY OF THE BR-2 REACTIONS - HEAT OF FORMATION OF THE BRO RADICAL(IO, I+BRO AND BR+I)

Authors
BEDJANIAN Y LEBRAS G POULET G
Citation
Y. Bedjanian et al., KINETIC-STUDY OF THE BR-2 REACTIONS - HEAT OF FORMATION OF THE BRO RADICAL(IO, I+BRO AND BR+I), Chemical physics letters, 266(1-2), 1997, pp. 233-238
Citations number
23
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
266
Issue
1-2
Year of publication
1997
Pages
233 - 238
Database
ISI
SICI code
0009-2614(1997)266:1-2<233:KOTBR->2.0.ZU;2-K
Abstract
Using the discharge-flow mass spectrometric method, the rate coefficie nts for the reactions Br + IO --> I + BrO (2), I + BrO --> Br + IO (3) and Br + I-2 --> I + IBr (4) have been measured at 298 K and 1 Torr: k(2) = (2.3 +/- 0.3) x 10(-11), k(3) = (1.45 +/- 0.20) X 10(-11) and k (4) = (1.20 +/- 0.15) X 10(-10) cm(3) molecule(-1) s(-1). The value of the enthalpy of BrO formation has been derived from the kinetic data obtained for reactions (2) and (3): Delta H-f,H-298(BrO) = 28.6 +/- 1. 4 kcal mol(-1).