One way to remove lead ion from water is to add a srource of iodide ion so taht lead iodide will precipitate out of solution:
Pb2+ (aq) + 2I- (aq) --> PbI2(s)
a. What volume of 1.o M KI solution must be added to 100.0 ML of solution that is .15 M in Pb2+ ion to precipitate all the lead ion?
b. What mass of PbI2 should precipitate?