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JEE Main2014ChemistryChemical EquilibriumActual

Consider the following equilibrium AgCl +2 NH ₃ [ Ag ( NH ₃ 2₂ ]⁺+ Cl ⁻ . White precipitate of AgCl appears on adding which of the following?

Options

  1. ANH ₃
  2. Baqueous NaCl
  3. Caqueous HNO ₃
  4. Daqueous NH ₄ Cl

Correct answer

C. aqueous HNO ₃

Step-by-step solution

2 HNO ₃( aq )+ [ Ag ( NH ₃ )₂ ]⁺+ Cl ⁻ AgCl ( s ) +2 NH ₄+2 NO ₃⁻ When nitric acid is added to amine solution, solution is made acidic and the complex ion dissociates and liberate silver ion to recombine with chloride ion. This is the conformatory test for silver in group 1 .

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