Home > Research > Publications & Outputs > A laser flash photolysis study of nitrous acid ...

Links

Text available via DOI:

View graph of relations

A laser flash photolysis study of nitrous acid in the aqueous phase

Research output: Contribution to journalJournal articlepeer-review

Published
<mark>Journal publication date</mark>4/02/2005
<mark>Journal</mark>Chemical Physics Letters
Issue number4-6
Volume402
Number of pages6
Pages (from-to)306-311
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The OH quantum yield from the photolysis of nitrous acid in the aqueous phase by the 355 nm light was measured to be 0.25 ± 0.03. OH radical thus formed reacted readily with HNO2 to produce NO2, which sequentially reacted with HNO2 to form the HNO2–NO2 adduct. The NO2 + HNO2 reaction was reversible with a forward rate constant of 3.76 × 107 dm3 mol−1 s−1 and a backward rate constant of 1.06 × 105 s−1. Decay of the HNO2–NO2 adduct would most likely generate HNO3 and NO at a rate constant of 3.0 × 103 s−1.