It works like a charm. Just for the record, I use 500ml erlernmeyer with side arm and 100ml pressure equalized addition funnel.
The procedure is found at Rhodium's: Anhydrous Hydrogen Chloride HCl(aq) + CaCl2 (https://www.thevespiary.org/rhodium/Rhodium/chemistry/equipment/calcium.hcl.generator.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/equipment/calcium.hcl.generator.html)
We were discussing about Calcium chloride (CaCl2), not Calcium sulfate (Ca2CO4) ;) ...
Then again, CaCl2 + H2SO4 = CaSO4 + 2HCl ...
edit: Quick search provided interesting links with patents and all concerning sodium bicarbonate, NaHCO3, calcium chloride, CaCl2, hydrochloric acid, HCL and "gypsum" (Ca2CO4·2H2O), CaSO4 and waste reduction program examples..[/red]
http://www.geocities.com/CapeCanaveral/Galaxy/6137/ (http://www.geocities.com/CapeCanaveral/Galaxy/6137/)
Method of manufacturing of technically pure hydrochloric acid and other chemicals using waste from soda production, Patent App. P-280653, 19.07.1989, B. Borkowski, J. Król-Bogomilski
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Calcium chloride, which is the second product in the Solvay method can be used in the chemical industry, in order to reach calcium sulfate (white pigment, white gypsum), hydrochloric acid and gaseous HCl in a simple industrial unit process.
The reaction proceeds at the temperature not exceeding 100°C, according to the equation:
CaCl2 + H2SO4 = CaSO4 + 2HCl
Calcium chloride that is the second product of the Solvay process should be dissolved in water. Then one should add the 20°Be hydrochloric acid to this solution.
Concentrated sulfuric acid H2SO4 should be added to this solution dropwise.
During this reaction the solution should be continuously mixed and cooled down to 20°C.
The 20°Be hydrochloric acid is obtained in this reaction in the same reactor. This is the first variant.
The sulfate CaSO4 is washed with a diluted solution of Na2CO3 and filtered off or centrifuged. Then one can use it as white pigment or white gypsum.
The hydrochloric acid can contain a small amount of CaCl2, but it is sufficiently pure for many technical applications and uses.
However, there is also a second variant; We can dissolve gaseous hydrogen chloride in the saturated brine.
Hydrochloric acid may be also obtained by the well known reaction, using NaCl and concentrated sulphuric acid. However, that reaction requires heating to the temperature of about 600°C. It may be also obtained in the reaction of H2 with Cl2, but the temperature of that reaction is 2400°C. It is important that the reaction with CaCl2 does not require heating. On the contrary, the mixture should be cooled.
HCL with cacl2 releases a tiny amount of HCL gas, its enough to gas a few grams of amine at most.
I've gassed a 116g batch with this setup, changing twice the
CaCl2. It takes time, and requires swirling the bottle every 15 seconds (this is where the shaker comes handy).
The CaCl2 'dessicates' the water out of HCl(aq), hence releacing the HCl(g).
Best setup seen so far is Post 265503 (https://www.thevespiary.org/talk/index.php?topic=10494.msg26550300#msg26550300)
(PoohBear4Ever: "Re: Bugs look out here comes the HCL !!!", Newbee Forum) ..
Tips from Post 266084 (https://www.thevespiary.org/talk/index.php?topic=10494.msg26608400#msg26608400)
(VideoEditor: "Re: Bugs look out here comes the HCL !!!", Newbee Forum) ..