1. Sodium phosphate and potassium nitrate; 2Na+(aq) + NO32-(aq) Na2NO3(s)
2 Copper(II) sulfate and ammonium carbonate; No reaction occurs.
3 Lead(II) nitrate and sodium chloride; Pb2+(aq) + 2Cl-(aq) PbCl2(s)
4 Sodium bromide and hydrochloric acid; No reaction occurs.
5 Nickel(II) chloride and lead(II) nitrate; Pb2+(aq) + 2Cl-(aq) PbCl2(s)