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Copper (II) salts and SO2: a question

  1. Apr 11, 2018 #1
    The reaction below moves left to right (I expect it has an equilibrium somewhere):

    SO2(g) + 2 CuCl2(aq) + 2 H2O → H2SO4(l) + 2 HCl(l) + 2 CuCl(aq)
    I'm wondering if copper (II) acetate will work in place of copper (II) chloride: producing acetic and sulfuric acids instead of hydrochloric and sulfuric. I can write the equation easily enough:

    SO2(g) + 2 Cu(CH3COO)2(aq) + 2 H2O → H2SO4(l) + 2 CH3COOH(l) + 2 CuCH3COO(aq)
    But that doesn't mean it will go that way. Will SO2 will reduce copper(II) acetate to copper (I) acetate and in turn be oxidized to SO3? I fear this reaction might be halide-specific, since both iodine and bromine can be used in the direct production of sulfuric acid.

    Anyone know if the acetate will work in place of the chloride for this?

    Thanks for any tips or pointers.
  2. jcsd
  3. Apr 12, 2018 #2


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    Staff: Mentor

    Never seen this reaction, but if it goes this way part of the driving force is the low solubility of CuCl.
  4. Apr 12, 2018 #3
  5. Apr 14, 2018 #4
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