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10.7   Which alkyl halide from the following pairs would you expect to react more rapidly by an S_{N}2 mechanism? Explain your answer.

            (ii)    

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The rate of S_{N}2 reaction decreases with an increase in hindrance to the attack of the nucleophile. The minimum hindrance is provided by the primary carbon then secondary and then tertiary carbon of alkyl halide.

So 2-bromobutane will react faster than 2-bromo-2-methylpropane in the nucleophilic attack.

Posted by

Devendra Khairwa

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