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Posted by on Tuesday, April 24, 2012 at 8:07pm.

A solution contains 1.50 g of dissolved Pb
2+ ions. How many grams of NaI must be added to the solution to completely precipitate all of the dissolved Pb
2+ as PbI2?

  • Chemistry - , Tuesday, April 24, 2012 at 9:44pm

    Pb^2+ + 2I^- ==> PbI2.

    mols Pb^2+ = 1.50g/atomic mass Pb
    mols I^- = twice that.
    g NaI = mols I^- x molar mass NaI

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