In qualitative analysis, the metals of Group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains Ag+ and Pb2 + at a concentration of 0.10 M. Aqueous HCl is added to this solution until the Cl concentration is 0.10 M. What will the concentrations of Ag+ and Pb2 + be at equilibrium?
(Ksp for AgCl = 1.8 × 10–10, Ksp for PbCl2 = 1.7 × 10–5)

(i) [Ag+] = 1.8 × 10–11 M; [Pb2 +] = 1.7 × 10–4 M;
(ii) [Ag+] = 1.8 × 10–7 M; [Pb2 +] = 1.7 × 10–6 M;
(iii) [Ag+] = 1.8 × 10–11 M; [Pb2 +] = 8.5 × 10–5 M;
(iv) [Ag+] = 1.8 × 10–9 M; [Pb2 +] = 1.7 × 10–3 M;

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