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In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is [2002]
  • a)
    A thin layer of Ag is formed on Cu
  • b)
    More voltage is required
  • c)
    Ag+ ion sare completely removed from solution
  • d)
    Less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2] ion
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. ...
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. Copper being more electropositive readily precipitate silver from their salt solution
whereas in K[Ag (CN)2] solution a complex anion [Ag(CN)2] is formed and hence Ag+ are less available in the solution and therefore copper cannot displace Ag from its  complex ion.
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Most Upvoted Answer
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. ...
D) Less availability of Ag ions, as Cu cannot displace Ag from [Ag(CN)2]

In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3 because Ag(CN)2 is a complex ion that provides a more stable source of Ag ions. This is because Cu cannot displace Ag from [Ag(CN)2] due to the strong bonding between Ag and CN ligands. As a result, less Ag ions are available in solution, leading to a more controlled and uniform silver plating process.
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In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is [2002]a)A thin layer of Ag is formed on Cub)More voltage is requiredc)Ag+ ion sare completely removed from solutiond)Less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2]– ionCorrect answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is [2002]a)A thin layer of Ag is formed on Cub)More voltage is requiredc)Ag+ ion sare completely removed from solutiond)Less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2]– ionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is [2002]a)A thin layer of Ag is formed on Cub)More voltage is requiredc)Ag+ ion sare completely removed from solutiond)Less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2]– ionCorrect answer is option 'D'. Can you explain this answer?.
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