Kinetics of the reactions of oxygen atoms and nitrogen atoms with sulphur trioxide
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 68, 2077-2082
- https://doi.org/10.1039/f19726802077
Abstract
The reaction of O atoms with SO3 yields SO2 and O2 as stable products, with a white metastable solid that condenses at –10°C (thought to be SO4) as a probable intermediate. The overall rate constants are 5 × 10–17, 7 × 10–17 and 9 × 10–17 cm3 molecule–1 s–1 at 300, 413 and 500 K, respectively. The activation energy is about 1 kcal mol–1, with a correspondingly low frequency factor of 3 × 10–15 cm3 molecule–1 s–1. The reaction of N atoms with SO3 yields SO2 as a main product, with an overall rate constant of about 5 × 10–16 cm3 molecule–1 s–1 at 300 K.Keywords
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