Guys..mapel kimia tentang kelarutan nih...please dijawab no.2 3 dan 4 beserta pembahasannya yaaa??

2. Cu3(PO4)2 ==> 3Cu2+ 2PO43-
Ksp = (3s)3 x (2s)2 = 108s^5 (d)
3. Hg2SO4 ==> 2Hg+ + SO42-
Ksp = (2s)2 x s = 4s^3 (b)
4. Ksp = 4(2.10^-3)^3 = 3.2.10^-8
5. Ag2CO3 ==> 2Ag+ + CO32-
Ksp = (2s)^2 x s = 4s^3
8x10^-12 = 4s^3
s^3 = 2x10^-12
s = 2x10^-4 M (b)