Looking for a simple and straightforward answer to a question of the same type

 

I'm trying to make hydrochloric acid from NaCl and H2SO4. When I added them together (acid was ~94% conc.) the result was hot, foamy acid everywhere and hydrochloric acid fumes filling the room.

 

I'd like to keep my HCl dissolved so I can practically distill it. Does this happen or does sulphuric acid force the HCl out of solution?

You could try doing it in an icebath, with slow addition and stirring, and less concentrated sulfuric acid.

Your reaction is actually an equilibrium shift, so you have concentrated sulfuric acid, chloride binds with proton and form HCl, as the H3O+ concentration is high equilirium position favors HCl side so HCl gas comes out. If you pump the gas to a dilute solution, position would be less intended to the HCl side so more will be dissolved.

The simple answer is to dilute the H2SO4 first.

Add the NaCl and then distil the HCl.

I take it that you know that messing with conc H2SO4 is a bit on the risky side.

Boiling acid isn't nice either.

Alright, thanks for the answers. I tried it out; what I saw was tiny bubbles of HCl forming, then rapidly being absorbed into solution. Also, my H2SO4 is buffered (drain cleaner >:/ ), so it is not all that nasty as it reacts quite slowly