So i want some conc. H2SO4 for some projects and im thinking if i can just heat heat NaHSO4 to release SO3 and dissolve it in water so is this a good
project to make some conc. H2SO4?
-AMchemistryHexavalent - 22-8-2012 at 10:16
Heating sodium bisulfate will not yield sulfur trioxide.
Why not just purchase it as drain cleaner, or boil down some battery acid?
There have been numerous threads here before about sulfuric acid, UTFSE!DJF90 - 22-8-2012 at 10:31
Still, it probably isn't a viable method for making a useful supply of concentrated sulfuric acid in an amateur setting.AJKOER - 22-8-2012 at 11:17
I believe a lower temperature is required for a workable decomposition of KHSO4 versus NaHSO4 into SO3. See "Fusion of Titanium Dioxide and Potassium
Pyrosulfate" advice by Paul Gaines, Ph.D.
To quote: "Note that potassium disulfate begins to decompose around 300 °C and sulfur trioxide is evolved rapidly at 500 to 600 °C. "