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m 2,5 15
b 2,5 5 2,5 5
s - 10 2,5 5
M PbI2 = 2,5 ÷ 200 = 0,0125
PbI2 ⇔ Pb^2+ + 2 I^-
0,0125 0,0125 0,025
Ksp = 0,0125 × (0,025)² = 7,8125 × 10^-6
Ksp PbI2 = 1,4 × 10^-8 < 7,8125 × 10^-6 ⇒ larutan mengendap