hydrobromic acid

[skwiff]

i saw a video on youtube about the making of hydrobromic acid, the guy used potassium bromide and sulphuric acid the set up was a beaker and over head stirrer and then a basic still. to me this seemed a bit ott because the product would require to be sepurated from the residual H2SO4

by using simple displacement chemistry one can make it using hydrochloric acid, this in theory should produce a more pure sample for the HBr can be boiled off and passed through distilled water to produce the acid.

 

equation:

KBr(aq) + HCl(aq) --> KCl(aq) + HBr(aq)

 

instead of:

KBr(aq) + H2SO4(aq) --> KSO4H + HBr

Edited October 12, 2011 by skwiff