12th Class Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank 12th CBSE Chemistry Haloalkanes and Haloarenes

  • question_answer
    \[CH{{F}_{3}}\] is less acidic than \[CHC{{l}_{3}}\]. Explain.

    Answer:

                    Due to stronger -\[I\]-effect of F than \[Cl,\,CH{{F}_{3}}\]should be more acidic than \[CHC{{l}_{3}}\]. But actually reverse is true. This is due to the reason that : \[CCl_{3}^{-}\] left after the removal of a proton from \[CHC{{l}_{3}}\] is stabilized by resonance due to the presence of d-orbitals on \[Cl\] but: \[CF_{3}^{-}\] left after the removal of a proton from \[CH{{F}_{3}}\] is not stabilized by resonance due to the absence of d-orbitals on F.


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