an-aqueous-solution-contains-pb2-ca2-and-k-identify-the-reagents-that-can-be-use

Question

An aqueous solution contains Pb²⁺, Ca²⁺, and K⁺. Identify the reagents that can be used to separate these cations.

Accepted Answer

(i) 6 M HCl then (ii) (NH₄)₂HPO₄ and NH₃

Answer

(i) 6 M HCl then (ii) (NH₄)₂S at pH = 8

Answer

(i) H₂S and 0.2 M HCl then (ii) (NH₄)₂S at pH = 8

Answer

(i) H₂S and 0.2 M HCl then (ii) (NH₄)₂HPO₄ and NH₃

An aqueous solution contains Pb2+, Ca2+, and K+. Identify the reagents that can be used to separate these cations.