Making H2SO4 from Sulfates and HCl

In this video, I'll show you a quite unique way of making sulphuric acid, from the weaker acid HCl, by what I call a reverse double displacement reaction.

[DrSpooglemon]

This is genius. With only pool acidifier and table salt I can make all the H2SO4 and HCL I need. [I don't need that much]

[DrSAM]

The reaction equilibrium normally leans heavily towards sulfates and HCl as a product, in fact a common way to make HCl is to treat chlorides with H2SO4.
From what I understand this method tricks this equilibrium since NaCl falls out of solution while the sulphate is more soluble and since the extra Na+ & Cl- ions solution give a common-ion effect the solubility of NaCl decreases even more.
I bet the HCl must be very concentrated for this to work though.

[pkalpha]

This is a very good and informative video. I have been working on using similar reagents to produce sulfuric acid and have come up with several ways. Now that I saw your video I would like to give it a go but also I will be doing a few tweaks to increase efficiency to this technique. Ill definately mention you and give you credits because I probably would still be sitting for weeks until I would somehow figure this out. Great content!

[alexslab.]

Thanks alot!. Im my country sulfuric acid drain cleaner is banned, so this will help me!

[gresmaster]

This is really cool i have a lot of NaSO4 because its a byproduct of a explosive i make

[satina]

It feels like every hobby chemist has or used to have this 10€ hotplate 😄 does the job very well though

[snoowbrigade]

So calcium sulfate would be a terrible sulfate salt to use in this reaction since calcium chloride is much more water soluble than calcium sulfate is. Would that make calcium sulfate a good salt to make HCl in this manner?

Could you switch the sulfate and chloride between KCl and CaSO4 to create KSO4 which then would create sulfuric acid in the reaction in the video?

Ugh, I got good grades in chemistry at school, too bad we didn't learn much.

[Berghiker]

It would have been nice if you had a little more patience and let the concentrated acid cool down to room temperature before adding it to the paper. Hot acid is always more effective.

[ae-bdgr]

Can a similar method be used to make HNO3 from HCL and KNO3? At 40C The potassium chloride is already a lot less soluble than the nitrate, and due to the low boiling point of both acids (in comparison to the one of Sulfuric Acid), i think they can be distilled quite easily.

[michaelwonner]

Why not heating Sodium Bisulfate until SO3 is liberated? Maybe a suggestion for a next Video….

[Zeldafan]

I was wondering, does sodium sulfate mean Na2SO4, or Sodium Bisulfate, which is NaHSO4? I have plenty of pure Na2SO4 from reacting MgSO4 with NaOH (-> Mg(OH)2 + Na2SO4).

I read that Na2SO4 won't work for this procedure with HCl, but NaHSO4 (Sodium Bisulfate) will work just fine. What did you use specifically?

[soppingclam]

Have you tried changing Dextroamphetamine Sulfate (dextro isomer of the compound d, l-amphetamine sulfate) into Amphetamine Hydrochloride or methamphetamine Hydrochloride. To me it seems as though, they started with the d, l amp and though many prcocess changed it to dexto. -> I have made many compounds but tehre is something im doing wrong just by using the 5mg tablets.
If I can't do this using my own calculations and perform it in the lab I fail my final course. Help please... or just call me an idiot for not working it out

[turtleteam]

Hello from France, nice and éducative vidéo. Do you think that you can do the same SODIUM HYDROGENOSULFATE TO SULFURIC ACID, but using electrolyse way ? Regards.

[soppingclam]

dextroamphetamine would include the removal of H2SO4 and introducing hydrochloric acid. I assume among other things

[Berghiker]

Does the heat of the glass joint not melt the teflon tape?

[dire_prism]

Could you explain what drives the direction of the reaction, since it's usually in th other direction - creating HCl from NaCl and NaHS04.

[Berghiker]

You can make it without using a 2 cell permeable membrane cell.

[DrSpooglemon]

Is the yellow color from elemental sulphur? I got a bit of yellow at the start and a lot of spent matches and egg smells which I presume to be sulphur, sulphur dioxide and hydrogen sulphide respectively. Is this side reactions or could it be impurities in the NaHSO4?

[Berghiker]

Making H2SO4 electrolytically, you have to boil of about 98% of the water afterwards to get concentrated acid. That's a big downside to that method. It's better to buy battery acid and boil of 60% of the water (Battery acid 38%)or use the method like you do in this video although it's a longer method.

[Ex-fknr]

Can these be used as car battery acid