Question

If Ksp for the dissolution of silver carbonate is 8.1x10-12, calculate the concentration of silver ions present in a saturated solution of silver carbonate

Answer 1

..........Ag2CO3 ==> 2Ag^+ + CO3^2-
I.........solid.......0.......0
C......x dissolves....2x......x
E..........solid......2x......x

Ksp = (Ag^+)^2(CO3^2-)
Substitute the E line into Ksp expression and solve for x = (Ag2CO3). Ag is twice that.