If an Aqueous Solution of _____ Is Added to a Mixture

Multiple Choice

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) NaF