February 19, 2017

Homework Help: Chemistry

Posted by Anon on Sunday, March 17, 2013 at 10:49pm.

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?

ksp for CaSO4 is 4.93*10^-5
ksp for Ag2SO4 is 1.20*10^-5

The concentration of Ca^2+ is 9.86*10^-4. Is this correct?

How do you find the percentage?

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