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Sebanyak 100 ml larutan KL 0,2 M dicampur dengan 100 ml larutan Pb(NO₃)₂ 0,2 M
2KL= 100x0,2
= 20 mmol= 2x10pangkat-2 : 2 = 10pangkat-2 (PP)
Pb(NO₃)₂= 100x0,2
= 20 mmol= 2x10pangkat-2 : 1 = 2x10pangkat-2 (PS)
mol PbI₂ = koef PbI₂ x mol KL
koef KL
= 1 x 2x10pangkat-2
2
= 10pangkat-2
= 0,02 (B)