CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2009

  • question_answer
    The alkyi halide that undergoes\[{{S}_{N}}1\]reaction more readily is

    A) ethyl bromide    

    B)        isopropyi bromide

    C) vinyl bromide                   

    D) n-propyi bromide

    E) t-butyl bromide

    Correct Answer: E

    Solution :

    \[{{S}_{N}}1\]mechanism involves formation of carbocation intermediate. Hence, the species which gives the most stable carbocation readily undergoes\[{{S}_{N}}1\]mechanism, t-butyl bromide gives the most stable carbocation, ie, \[3{}^\circ \]carbocation, so it readily undergoes\[{{S}_{N}}1\]reaction.


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