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Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate?

What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by selective precipitation?

  • Chemistry -

    You need to provide Ksp of each. I have those but all texts don't agree. I may use different ones than you have.

  • Chemistry -

    Just take the coeffficients to be the divisors of the denominator. Then take the reciprocal, divide by the lattice energy of the molar solubility, and you've got your solution!

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