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Paragraph: An aqueous solution of a mixture of two inorganic salts, when treated with dilute H C ?, 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 H ₂ ~S in a dilute mineral acid medium. However, it gave a precipitate ( R ) with H₂ S in an ammoniacal medium. The precipitate R gave a coloured solution ( S )

Options

  1. APb 2 +
  2. BHg 2 2 +
  3. CAg +
  4. DHg 2 +

Correct answer

A. Pb 2 +

Step-by-step solution

Pb 2 + + 2 Cl - ⟶ PbCl 2 white ppt soluble in hot water

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