Post a New Question

AP Chemistry

posted by on .

If .100 M NaCl (aq) is added slowly to a beaker containing both .120 M AgNO3 (aq) and .150 M Pb(NO3)2 (aq) at 25C which will precipitate first, AgCl(s)PbCl2(s)?

  • AP Chemistry - ,

    AgCl ==> Ag^+ + Cl^-
    Ksp = (Ag^+)(Cl^-)
    (Cl^-) = Ksp/(Ag^+).
    YOu know Ksp and Ag^+, solve for Cl^-

    PbCl2 ==> Pb^2+ + 2Cl^-
    Ksp = (Pb^2+)(Cl^-)^2
    (Cl^-) = sqrt(Ksp/(Pb^2+)
    You know Ksp and (Pb^2+), solve for Cl^-.

    Now consider that you are dripping the NaCl into the beaker (slowly) containing BOTH salts, the first ppt will be the one that exceeds the Ksp first.

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question