Question: please need help 2. Based on selective precipitation, identify the order in which the following ions CO32,SO42 and Cl has to be added in a

please need help please need help 2. Based on selective precipitation, identify the order in

2. Based on selective precipitation, identify the order in which the following ions CO32,SO42 and Cl has to be added in a way to separate Pb2+,Fe3+ and Hg22+ : a) CO32,SO42,Cl b) SO42,CO32,Cl c) SO42,Cl,CO32+ d) Cl,SO422,CO32 e) None of the above could work for selective precipitation

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