I have seen many mantions of generating HBr gas in the same manner as one would liberate hydrogen chloride from aqueous solution, with the use of H2SO4 and NaCl, and then I have seen many statements that this does not work...
Since I have not seen the liberation of the gas from aqueous solution mentioned in any of the journal articles I have dredged up, and from the various posts saying "nay" I have pretty much come to the conclusion that this does not work, and you must resort to the use of tetralin and bromine.
Am I wrong? Has anyone ever actually done the procedure using aqueous HBr? If it does work, would one need to substitute NaBr for NaCl, or is the salt simply a dehydrating agent? Since HCl is a weaker acid than HBr, I keep having the persistant thought that if NaCl is present, it would react and generate at least some HCl.
If it is not a viable option, would simply reacting equimolar amounts of a bromide salt and H2SO4 in GAA be a viable alternative for anhydrous HBr?
Any help would be greatly appreciated!