Jawabanmu

2014-06-20T21:53:08+07:00
CaF2 ⇒ Ca2+ + 2F- , Ksp = 3,2 x 10^-11
s             s         2s

Ksp = (Ca2+)(F-)²
3,2 x 10^-11 = (s) (2s)²
3,2 x 10^-11 = 4s³
32 x 10^-12 / 4 = s³
8 x 10^-12 = s³ 
2 x 10^-4 = s

Ca2+ = 2 x 10^-4
kak , dpat 12 darimana, trus (s ) yang didepan (2s)2 tu dikemanain