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Which alkyl halide from the following pairs would you expect to react more rapidly by an SN2 mechanism? Explain your answer. - Chemistry

Which alkyl halide from the following pairs would you expect to react more rapidly by an SN2 mechanism? Explain your answer.

`CH_3CH_2CH_2CH_2Br` or  

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Solution

2-bromobutane is a 2° alkylhalide whereas 1-bromobutane is a 1° alkyl halide. The approaching of nucleophile is more hindered in 2-bromobutane than in 1-bromobutane. Therefore, 1-bromobutane reacts more rapidly than 2-bromobutane by an SN2 mechanism.

Concept: Haloalkanes and Haloarenes - Nomenclature
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APPEARS IN

NCERT Class 12 Chemistry Textbook
Chapter 10 Haloalkanes and Haloarenes
Q 7.1 | Page 307
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