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How to separate Pb2+ and Cu2+, Pb2+ and Zn2+, Cu2+ and Zn2+, PO4-3 and CO3-2, and CO3-2 and CNS. Thankyou

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I'll do the first one to show you how to get started.
Add HCl. Pb^2+ forms PbCl2 which is a ppt.
Cu^2+ no reaction.
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