15. Solving a chemistry problem
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15. Solving a chemistry problem
16. Zn (II) and Pb (II) ions are extracted with a 0.10 M solution of 8-hydroxyquinoline (HOx) in chloroform in the form of Me (Ox) 2 chelates. The extraction constant of Zn(Ox)2 is 2.5x10-5, and Pb(Ox)2 is 1.0x10-8. Calculate the separation coefficient of metals at pH 4.00, provided that the volumes of the phases are equal, (cZn = cPb = 1.0•10-4 mol/l).
Answer: α = 2.5•103.
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