Tentukan rumus Ksp untuk senyawa berikut
a. PbI2
b. CdS
c. Ca(OH)2
d. Ag2CrO4
e. Cu2S
a. PbI2 ⇌ Pb2+ + 2I-
s s 2s
Ksp = [Pb2+][I-]2
Ksp = s.(2s)2 = 4s3
b. CdS ⇌ Cd2+ + S2-
s s s
Ksp = [Cd2+][S2-]
Ksp = s. s = s2
c. Ca(OH)2 ⇌ Ca2+ + 2OH-
s s 2s
Ksp = [Ca2+][OH-]2
Ksp = s.(2s)2 = 4s3
d. Ag2CrO4 ⇌ 2Ag+ + CrO42-
s 2s s
Ksp = [Ag+]2[CrO42-]
Ksp = (2s)2.s = 4s3
e. Cu2S ⇌ 2Cu+ + S2-
s 2s s
Ksp = [Cu+]2[S2-]
