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Posted by on Thursday, November 4, 2010 at 7:21pm.

A solution contains an unknown mass of dissolved silver ions. When potassium chloride is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 245 mg. What mass of silver was in the original solution? (Assume that all of the silver was precipitated out of solution by the reaction.)

  • Chemistry - , Thursday, November 4, 2010 at 9:41pm

    245 mg = 0.245 grams.
    moles AgCl = grams/molar mass AgCl.

    Mols Ag must be the same as moles AgCl. Convert moles Ag to grams Ag. g = moles x molar mass.

  • Chemistry - , Sunday, November 7, 2010 at 11:21pm

    0.245

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