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A kinetic study of the reaction between formic acid and HoBr

✍ Scribed by M. A. Brusa; A. J. Colussi

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 280 KB
Volume: 14
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550140505

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✦ Synopsis

Abstract

The reaction between formic acid and HOBr in strongly acid aqueous media was studied by absorption spectrophotometry at 298 K. Bromine, the monitored species, displays a transient behavior, gradually rising up to a maximum and then decaying with first‐order kinetics. Reaction rates, expressed as R = ‐dC~Br2~/dt, depend on the concentrations of HCOOH (0.1–1.4__M__), HOBr (0.3–1.5 × 10^−3^ M), and H^+^ (0.1–1.0__M__). The mechanism
equation image
with k~1~ =1.04 ± 0.20__M__^−1^· s~−1~, k~3~ = 20.2__M__^−1^, quantitatively accounts for all observations within experimental error.

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