Hitunglah CaSO4 jija diketahiu (Ksp) CaSO4 = 2,5 x 10-5

Kelarutan & Hasilkali Kelarutan
Kimia XI

Kelarutan = s

CaSO4 < = > Ca 2+ + SO4 2-
s s s

Ksp = [Ca 2+] [SO4 2-]
Ksp = s. s
Ksp = s^2

s = akar kuadrat Ksp
s = akar kuadrat [2,5 x 10^-5]
s = akar kuadrat [25 x 10^-6]
s = 5 x 10^-3 mol/L

Jadi kelarutan CaSO4 sebesar 5 x 10^-3 mol/L