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General Chemistry

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I add 5 drops Potassium Iodide (KI) to 5 drops lead nitrate (PbNO3). The solution is centrifuged and the aqueous layer is discarded. I then add 5 drops of nitric acid (HNO3), 5 drops of hydrogen peroxide and 10 drops of dichloroethane (C2H4Cl2) to the precipitate.

The solution is shaken and lightly heated resulting in a clear aqueous solution with a deep red precipitate.

What anions are present in the precipitate? How do you know?

Appreciate the help.

  • General Chemistry - ,

    From your description, I think you have formed red lead oxide (Pb3O4), The oxide ion is present in the ppt.

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