azotan(V)ołowiu(II)+jodek potasu--->jodek ołowiu(II)+azotan(V)potasu
Pb(NO3)2+2KI--->PbI2↓+2KNO3
Pb2+ +2NO3- +2K+ +2I- --->PbI2↓ +2K+ +2NO3-
Pb2+ +2I- --->PbI2↓
