I recently attempted to make H2sO4 here was my procedure:
I heated Sodium Bisulfate (NaHSO4) in a test tube- this should have made gaseous SO3
the test tube had a tube on the end that i used to bubble the SO3 through water in a collection beaker with a peice of Lithmus paper in it (so i could tell if it was working)....
Then came my problem... I was heating it and it was letting off water vapor (another bi product of heating NaHSO4) then i smelt sulfur and suddently the water (or possibly sulfuric acid) shot back up the tube and blew up my test tube. I was cleaning up this mess (thinking it was a complete failure) when i noticed my Lithmus paper had turned red. I think this could have been sulfuric acid, but i couldnt do any tests with it because i was busy picking up broken glass, and wiping up mystery liquid. The verdict- It is hard (and dangerous) for a home chemist with basic supplies (chemicals, testubes, burners, ect.) to make sulfuric acid.
Now that i have told my story, if any of you chemistry wizzes notice a flaw in my procedure please let me know because i would like to perfect an easy way to make sulfuric acid
thanks
albgk