A solution containing Pb(NO3)2 is titrated against KI solution so that PbI2 will precipitate out (ksp PbI2 = 7.9 x 10-9). (KI is in the buret!)
Which ions will form the adsorption layer on the precipitate particles before and after the equivalence point, respectively?
A ) I-
B ) Pb2+
C ) NO3-
D ) K+
Adsorption layer before equivalence point?
Adsorption layer after equivalence point?