An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl…
Chemistry · JEE Advanced · NTA Exams — Principles Related To Practical Chemistry
An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl, gave a precipitate (P) and a filtrate (Q). The precipitate P was found to dissolve in hot water. The filtrate (Q) remained unchanged, when treated with H2S in a dilute mineral acid medium. However, it gave a precipitate (R) with H2S in an ammoniacal medium. The precipitate R gave a coloured solution (S), when treated with H2O2 in an aqueous NaOH medium.
The precipitate P contains
The precipitate P contains
- Pb2+
- Hg22+
- Ag+
- Hg2+
Answer
(A) Pb 2+
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