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Anyhdrous aqua regia?

  1. Nov 25, 2014 #1
    Phosphorus pentoxide can make nitric acid anhydrous, also hydrochloric. Aqua regia being a combination of the two acids, it seems to follow that the addition of phosphorus pentoxide would result in an anhydrous aqua regia? Is this a correct assumption? If it is correct, then would the 'anhydrous aqua regia' be more effective? And would there be any unusual hazards beyond being a more potent form of aqua regia?
  2. jcsd
  3. Nov 25, 2014 #2


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    Staff: Mentor

    HCl without water is hardly an acid.
  4. Nov 25, 2014 #3


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