Kinetics of the reaction of bromine atoms with molecular fluorine

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Abstract
The rate constant of the reaction of bromine atoms with molecular fluorine is determined by mass spectrometrically monitoring BrF produced at fixed reaction time as a function of the concentration of F2 added to a flowing mixture of Br and Br2 in He diluent. The rate constant is 1.31×10−13 exp(−17.9 kJ mole−1/RT) cm3 molecule−1 sec−1 over the temperature range 296–418° K. Br+F2 is thus another example of the anomalously slow rate which is characteristic of the reactions of F2 with many atoms.

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