In qualitative analysis Ag+,Hg2+ and Pb2+ are separated from other cations by addition of HCl. Calculate the concentrations of Cl- required to just begin precipitation of
a)AgCl
b)Hg2Cl2 and
c) PbCl2 in a solution having metal ion concentrations of 0.030 M.
d) What fraction of Pb2+ remains in solution when the Ag+ ion just begins to precipitate?