So only the CuPO4 would be insoluble? Is that what you are implying??
I am asking because I need to know if an exchange reaction would take place when the two solutions are mixed together:
NH4NO3 + Li3PO4
KClO3 + Li3PO4
CuSO4 + Li3PO4
Cs2O + Li3PO4
I am correct in saying that only the 3rd mixture in my list will allow for an exchange reaction to take place?