Question

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

Answer 1

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.
Filter.