2. Questions Bank
  3. NEET
  4. Chemistry
  5. Coordination Chemistry

NEET Chemistry Coordination Chemistry Question Bank Self Evaluation Test - Co-ordination Compounds

  • question_answer
    In the silver plating of copper, \[K[Ag{{\left( CN \right)}_{2}}]\] is used instead of\[AgN{{O}_{3}}\]. The reason is

    A) a thin layer of Ag is formed on Cu

    B) more voltage is required

    C) \[A{{g}^{+}}\] ions are completely removed from solution

    D) less availability of \[A{{g}^{+}}\] ions, as Cu cannot displace Ag from \[{{[Ag{{(CN)}_{2}}]}^{-}}\] ion.

    Correct Answer: D

    Solution :

    [d] In silver plating \[K[Ag{{(CN)}_{2}}]\] is used which provides constant and required supply of \[A{{g}^{+}}\] ions as \[Ag{{(CN)}_{2}}^{-}\] is very stable. But if \[AgN{{O}_{3}}\] is used concentration of \[[A{{g}^{+}}]\] in solution will be very large. In that case Ag will be deposited at faster rate without any uniformity.


You need to login to perform this action.
You will be redirected in 3 sec spinner