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Does anyone know of a practical way to make hydrochloric acid at home?
It could be just a matter of interpretation, but I don't think that ticks the boxes marked "practical " and "at home"
Quote from: Bored chemist on 19/08/2012 20:38:42It could be just a matter of interpretation, but I don't think that ticks the boxes marked "practical " and "at home"Certainly, not for kids or peple without the appropriate restraint. As a student, I began from this:http://chemistry.about.com/b/2008/08/05/banned-book-the-golden-book-of-chemistry-experiments.htm
Quote from: bmore_ravens on 19/08/2012 09:49:35Does anyone know of a practical way to make hydrochloric acid at home?They say if you create a container in the dark filled with chlorine and hydrogen gas 36 to 1 by weight, chlorine to hydrogen, and then expose it to direct sunlight, that it explodes violently. It used to be called Spirit of Sea Salt. Because they used Sea Salt to make it with sulfuric acid, like bmore_ravens had mentioned.They say you cannot collect it over a vat of water. Because the water absorbs so much of the gas, something like 480 times the waters volume in gas. Sincerely, William McCormick
A moderately safe method of preparation that would be suitable for home use, is the following: prepare a saturated solution of calcium chloride in water. That will involve roughly equal masses of the hydrated salt and the water. The solution will be roughly 7 M in calcium, 14 M in chloride. Then add sulfuric acid. Bench dilute sufuric acid is often about 6 M, so if that is used you would use a volume about 10% larger than the volume of your calcium chloride solution, and you will obtain a precipitate of calcium sulfate, which is only sparingly soluble.
But with the method you proposed you still need distillation, if you want pure concentrated HCl, because CaCl2 and H2SO4 should be in dilute solution; otherwise you will have also some Ca(HSO4)2 dissolved in water: 2HCl + 2CaSO4 <--> Ca(HSO4)2 + CaCl2
Good point, Lightarrow. I am rather embarrassed now.