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Which is the correct equation for the reaction of AgCl with NH 4 OH ?

Options

  1. AAgCl + NH 4 OH → AgOH + NH 4 + + Cl -
  2. BAgCl + 2 NH 4 OH → Ag NH 3 2 + + Cl - + 2 H 2 O
  3. CAgCl + 4 NH 4 OH → Ag NH 3 4 + + Cl - + 4 H 2 O
  4. D2 AgCl + NH 4 OH → Ag 2 O + NH 4 + + H + + 2 Cl -

Correct answer

B. AgCl + 2 NH 4 OH → Ag NH 3 2 + + Cl - + 2 H 2 O

Step-by-step solution

Reaction of AgCl with NH 4 OH is a complexation reaction. AgCl + 2 NH 4 OH → Ag NH 3 2 + + Cl - + 2 H 2 O AgCl is white colour water insoluble compound but in the presence of NH 3 its solubility increase due to formation of complex Ag ( NH 3 ) 2 + . [ Ag ( NH 3 ) 2 ] Cl is the formed complex.

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