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NEET Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank Self Evaluation Test - Haloalkanes and Haloarenes

  • question_answer
    \[C{{H}_{3}}Br+N{{u}^{-}}\xrightarrow{{}}C{{H}_{3}}-Nu+B{{r}^{-}}\] The decreasing order of the rate of the above reaction with nucleophiles \[\left( N{{u}^{-}} \right)\] A to D is \[[N{{u}^{-}}=(A)Ph{{O}^{-}},(B)Ac{{O}^{-}},(C)H{{O}^{-}},(D)C{{H}_{3}}{{O}^{-}}]\]

    A) \[A>B>C>D\]              

    B) \[B>D>C>A\]

    C) \[~D>C>A>B\]     

    D) \[D>C>B>A\]

    Correct Answer: C

    Solution :

    [c] The acid character follows the order: \[C{{H}_{3}}COOH>{{C}_{6}}{{H}_{5}}OH>{{H}_{2}}O>C{{H}_{3}}OH\] The basic character will follow the order \[C{{H}_{3}}CO{{O}^{-}}<{{C}_{6}}{{H}_{5}}{{O}^{-}}<O{{H}^{-}}<C{{H}_{3}}{{O}^{-}}\] The stronger the acid, the weaker the conjugate base formed.


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