A laser flash photolysis study of the decay of Cl-atoms and Cl-2(-) radical anions in aqueous solution at 298 K


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hwjacobi [ at ] awi-bremerhaven.de

Abstract

The rate coefficient for the reaction of Cl atoms with (1) H2O and of Cl-2(-) radical anions with (2) H2O and (3) OH- have beendetermined using laser photolysis for the generation of Cl/Cl-2(-) and long path laser absorption for the time resolved detection of Cl-2(-).The following results were obtained: k(1) = (2.3 +/- 0.6).10(5) s(-1), k(2)<610 s(-1) and k(3) = (4.0+/-0.6).10(6) M-1 s(-1). It isconcluded that the lifetime of Cl/Cl-2(-) in aqueous solution strongly depends on the Cl- content and on pH.



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Peer-reviewed
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Published
Eprint ID
3667
Cite as
Jacobi, H. W. , Herrmann, H. and Zellner, R. (1997): A laser flash photolysis study of the decay of Cl-atoms and Cl-2(-) radical anions in aqueous solution at 298 K , Berichte der Bunsen-Gesellschaft - Physical chemistry chemical physics, 101 , pp. 1909-1913 .


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