Thermal decomposition of hydrogen bromide

This reaction and the synthesis of HBr have also received much less attention than the corresponding reactions of the HI system. The problem of the mechanism of the H2+Br2 reaction which Bodenstein and Lind33 found to be complex was later solved independently by Christiansen34, Herzfeld35 and Polanyi36. The well-known mechanism and the kinetic equation resulting from the stationary-state solution are given below 

No evidence has been found for the participation of the molecular reactions H2+Br25 2HBr 

Arrhenius parameters for reactions in the hydrogen-bromine system are shown in Table 3. 

The results shown in Table 3 have been discussed in some detail by Fettis and Knox42. They consider that the early work33,38,39,40 yields rather low values 

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