Deathunter88
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Making Sulfuric/Hydrochloric Acid With Nitric Acid
Hello everyone,
Ironically for me, I can only acquire nitric acid at a cheap acceptable price. It is extremely hard for me to acquire concentrated sulfuric and
hydrochloric acid. I am asking if there is a way to make those two acids from nitric acid?
Thanks.
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TheChemiKid
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You can make HCl by adding salt to nitric acid in stoicheometric quantities.
[Edited on 22-2-2015 by TheChemiKid]
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Bert
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There is a Sodium or Potassium metabisulfite process for making sulfuric acid using nitric acid or Hydrogen peroxide, but it requires an acid (usually
hydrochloric, see above post) to react with the bisulfite, releasing SO2.
http://youtu.be/okvvD3-DF9U
Where in the world are you that nitric acid is available, but sulfuric and hydrochloric are not?
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Chemosynthesis
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Not exactly a feasible process, but you could theoretically mix nitric acid with a sulfate salt and try freezing out the sulfuric acid. Equilibrium is
disfavored, but you are shifting it.
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woelen
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This is not true, you will get aqua-regia, which decomposes to chlorine and nitrosyl chloride. HNO3 is not a good starting point at all for making
HCl.
Making H2SO4 from HNO3 also will be very hard, I see no reasonable way.
If you want HCl, then you have the option of heating a mix of table salt and so-called pH-minus for swimming pools (which is NaHSO4). HCl is driven
off from such a mix and can be dissolved in water.
For many experiments in aqueous solution, NaHSO4 is a suitable substitute for dilute H2SO4. If you need concentrated H2SO4, then you have to buy it,
or maybe you can do something with electrolysis of copper sulfate, but the latter process is slow and tedious and will produce impure acid.
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Bert
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Woelen, what are the temperature parameters for the NaHSO4 + NaCl process?
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1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it
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2. List any points of agreement (especially if they are not matters of general or widespread agreement).
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4. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).
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Deathunter88
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Quote: Originally posted by Bert  | There is a Sodium or Potassium metabisulfite process for making sulfuric acid using nitric acid or Hydrogen peroxide, but it requires an acid (usually
hydrochloric, see above post) to react with the bisulfite, releasing SO2.
http://youtu.be/okvvD3-DF9U
Where in the world are you that nitric acid is available, but sulfuric and hydrochloric are not? |
I live in China, which means I need a permit to purchase conc. Sulfuric acid (it is expensive too at 12 dollars a pint). Conc. nitric acid is cheap (2
dollars a pint) so I wondered if there was a way to transform one into the other.
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