Solubility of Silver(I) Carbonate is 3.2x10^-2 g/100mL What is the Ksp?

Question

I'm getting 2.19x10^-12
But it's not in the answer sheet

Answer 1

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

I think you didn't enter the data right. I suspect that is 3.2E-2 g/1000 mL; otherwise, you can't get close to 10^-12 as an answer.

Assuming it is 3.2E-2 g/L, then
3.2E-2/275.75 = about 1.16E-4 M
Ksp = (Ag^+)^2(CO3^2-)
Ksp = (2x)^2(x) = 4x^3
Ksp = 4*(1.16E-4)^3 = about 6.2E-12
The tables give 8.1E-12 which works out to about 0.35E-2 g/L.