text: This is difficult, as there may be more than one formula for the compounds you listed.\n\nCopper (I) chloride is CuCl\nCopper (II) chloride is CuCl2\nLead nitride is usually used to mean "yellow lead" which is Lead (II) nitride, which is Pb3N2;\nbut it could also be used for Lead (IV) nitride which is Pb3N4.\n\nOne possible reaction:\nPb3N2 + 3 CuCl2  -->  Cu3N2 + 3 PbCl2\n\nThis is a double replacement with no redox.