Questions
A colorless aqueous solution contains nitrates of two metals, X and Y. When it was added to an aqueous solution of NaCl, a white precipitate was formed. This precipitate was found to be partly soluble in hot water to give a residue P and a solution Q. The residue P was soluble in aq. NH3 and also in excess sodium thiosulfate. The hot solution Q gave a yellow precipitate with KI. The metals X and Y, respectively, are
detailed solution
Correct option is A
X : Ag P : AgCl Y : Pb Q : PbCl2 AgCl + 2NH3 solution → [Ag(NH3)2]Cl(P) (excess) clear solutionAgCl + 2Na2S2O3 solution → Na3 [Ag(S2O3)2] + NaCl(P) (excess) clear solution PbCl2 + 2KI → PbI2 ↓ + 2KClHot solution (yellow ppt) (Q)Similar Questions
Ammonium molybdate is used to test the radical:
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