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

Question

An aqueous solution contains $$Pb^{2+}$$, $$Ca^{2+}$$, and $$K^{+}. $$Identify the reagents that can be used to separate these cations.

Accepted Answer

(i) 6 M HCl then (ii) (NH_{4})_{2}HPO_{4} and NH_{3}

Answer

(i) 6 M HCl then (ii) (NH_{4})_{2}S at pH = 8

Answer

(i) $$H_{2}S $$and 0.2 M HCl then (ii) (NH_{4})_{2}S at pH = 8

Answer

(i) $$H_{2}S $$and 0.2 M HCl then (ii) (NH_{4})_{2}HPO_{4} and NH_{3}

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