
%0 Journal Article
%A Daly, NJ 
%A Gilligan, MF 
%T The gas-phase reaction of acetic acid with hydrogen bromide
%J Australian Journal of Chemistry
%D 1969/04/01
%V 22
%N 4
%P 713-720
%K 
%R https://doi.org/10.1071/CH9690713
%U https://www.publish.csiro.au/paper/CH9690713 
%X In the gas phase, acetic acid reacts with hydrogen bromide in the temperature range 412-492° to give methyl bromide, carbon monoxide, and water. The reaction is first order in each reagent, and the variation of rate constant with temperature is described by the equation                      k2 = 1011.67exp(-30400/RT) ml mole-1 sec-1   Possible transition states for the reaction are examined. A mechanism involving an intermediate of the type CH3CO+Br- is possible if the reaction is of the family represented by the hydrogen bromide catalysed decompositions of trimethylacetic, isobutyric, and propionic acids. 
