larutan jenuh Al(OH)3 memiliki pH = 9+log 3. berapa hasil kali kelarutan Al(OH)3 mohon bantuan nya

pH = 14-pOH
pOH = 5-log3
pOH = -log OH-
3.10^-5 = v.bs x Mb
3.10^-5 = 3 x Mb
Mb = 10^-5

Al(OH)3 ==> Al3+ + 3(OH-)
Ksp = (s)3 x 3s
Ksp = 3s^4
Ksp = 3(10^-5)^4
Ksp = 3(10^-20)
Ksp = 3.10^-20