HCL from Hydrochloric acid ?

[Urky]

Hello good people, I would like to ask you a question that bothers my mind. Its really hard to obtain sulphuric acid in my country, but for some reason hydrochloric acid is OK.
My question is: if im doing the NaOH and H2SO4 reaction to produce HCL gas and bubling it through water i get hydrochloric acid.
Is it possible to buy hydrochlodic acid and obtain HCL gas from it ? Like with evaporation for example ? Thanks for ideas.

 

[xile]

From NaOH and H2SO4 you will never get HCl

 

[xile]

In my opinnion you need the Cl from NaCl and the H from H2SO4 or an other acid, but not HCl, cause HCl have allready the conection of H and Cl.

 

[Urky]

My bad i meant NaCl​

NaCl+ H2SO4 → NaHSO4 + HCl​

 

[Urky]

 

[xile]

??? I have no clue, but shoult it not be 2 NaCl + H2SO4 -> 2 HCl + Na2SO4 ???

 

[UWe9o12jkied91d]

You can drip sulphuric on salt and bubble in meoh/ether or water, absolutely

 

[Urky]

yes, i know about this methos but i cant get sulphuric acid or sulphuc to make my own sulphuric acid
i want to know if itspossible to get hcl gas from liquid hydrochloric acid.

 

[UWe9o12jkied91d]

Oh but ofcourse.HCl dripped over salt will generate HCl gas too, but pretty weakly, it will take a while to make a conc. sol. like this.
You can look for pool chlorine aka TCCA, dripping HCl over it will generate much more HCl gas then table salt.I would say it isnt even needed to prepare solution from it. Just use as I directed to precipitate as much as you need.

 

[Urky]

so heating hydrochloric acid would not evaporate hcl if heated ?

 

[tankikan]

Yes, you are correct, I just tried to get hcl gas from hcl acid + table salt, and the reaction is too weak. Yeap, it will still generate the hcl gas but will take much more time to wait and it could reach almost a day/s if you have the time to wait.

 

[xile]

In the atmosphere, it forms from sulfur dioxide, which is produced when substances containing sulfur are burned or in volcanic eruptions. The sulfur dioxide is oxidized to sulfur trioxide by hydroxyl radicals and oxygen. Finally, free sulfuric acid is formed with water.

As always, I have no knowledge about it, just the idea that sulfuric acid is also produced in the atmosphere and that it could also be imitated on a small scale. sulfur is very easy to get at my location.

 

[UWe9o12jkied91d]

Yes, these procedures all sound great and easy on paper but to prepare sulphuric acid from the dioxide then trioxide is very time consuming and better suited for industrial scale.

 

[Ortist]

You can generate HCl gas from aqueous HCl by heating it. High temperature will push gas from the solution. This method is low yelding. Also there will be water vapours going along with gas. You need a flask with muriatic acid, heating, then dry your gas thru calcium chloride tube, then bubble it into your solvent/reaction mixture. It is doable.

Can't you get H2SO4 from OTC sources? Like acid-lead battery fluids, or varioous drain cleaners and concentrate it?

 

[Urky]

I would a drain cleaner containg H2SO4 can you please tell me how to extractg it from it a purify it ?

 

[Ortist]

you need to boil water out of it as much as possible. you don't need it to be clean.

 

[Ortist]

Oh I forgot. Very simple method and it is a high yelding: drip your HCL acid over anhydrous calcium chloride. It will produce alot of HCL gas, but it also needs to be dried thru calcium chloride packed tube.

 

[Urky]

I can get liquid calcium chloride 36 percent and HCL 31 percent. will it work this way ? Also thanks for usefull idea.

 

[UWe9o12jkied91d]

"anhydrous calcium chloride"
"calcium chloride 36 percent"

What exactly do you think the other 64% is?

 

[xile]

here is your HCl

CaCl2 + H2O → CaO + 2 HCl​

in 3/4 of reaction options it will produce HCl gas, the calculatur sad.

 

[Nicoino]

Bro it's not how it works, my eyes are bleeding.
CaCl2 absorb water freeing the HCl as gasseus

 

[xile]

What about the method without HCl Gas?
IdK its just another idea.
I Reade sometimes from a mixture of 10 parts aceton and 1 part HCl.
Maybe this Methode work for you.

 

[UWe9o12jkied91d]

It depends on the application

 

[xile]

Like I said, I don't know. I've read about it in several threats (e.g. meth from p2p via al/hg or mephedrone from the kitchen)

 

[UWe9o12jkied91d]

follow the procedure if you are not sure

 

[w2x3f5]

shit idea, hydrogen chloride is an excellent catalyst for aldol condensation of acetone