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BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    Which is Lewis base: \[{{I}_{2}}+{{I}^{-}}\xrightarrow{{}}{{I}_{3}}^{-}\]?

    A) \[{{I}_{2}}\]       

    B)                        \[I_{3}^{-}\]

    C) \[{{I}^{-}}\]                        

    D)        None of these

    Correct Answer: C

    Solution :

    Key Idea: Electron donors are Lewis base. In the reaction \[{{I}_{2}}+{{I}^{-}}\xrightarrow{{}}{{I}^{3-}},{{I}^{-}}\]donates a pair of electron and \[{{I}_{2}}\]accepts it to form \[{{I}^{3-}}\] \[\therefore \] \[{{I}^{-}}\]is Lewis base.


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