If an aqueous solution of ____ is added to a mixture of Pb2+ and Ba2+, the lead ion will precipitate, but the barium ion will remain in solution.

A. NaOH

B. Na2SO4

C. K3PO4

D. KCO3

E. Ca(CH3CO2)2

Question

If an aqueous solution of ____ is added to a mixture of Pb2+ and Ba2+, the lead ion will precipitate, but the barium ion will remain in solution.
		
A. NaOH
		
B. Na2SO4
		
C. K3PO4
		
D. KCO3
		
E. Ca(CH3CO2)2

anonymous · Answer

Find whichever ion in the choices will lead to a precipitate with lead (OH, SO4, PO4, CO3, CH3COO)

jfraser · Answer

^ but not also precipitate with barium.

anonymous · Answer

Find the precipitation constant for each reaction and find the value that would be less than to precipitate barium but n=more to precipitate lead.