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A haloalkane is known to have an SN2 reaction rate 30 times faster than that of ethyl bromide. Identify the haloalkane.

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A haloalkane is known to have an SN2 reaction rate 30 times faster than that of ethyl bromide. Identify the haloalkane.

(a) Methyl bromide

(b) Isopropyl bromide

(c) tert-Butyl bromide

(d) neo-Pentyl bromide

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Asked question is from Haloalkanes & Haloarenes topic in division Haloalkanes and Haloarenes of Chemistry – Class 12

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The correct option is (a) Methyl bromide

Explanation: The presence of bulky groups around the C atom has an inhibiting effect on the rate of SN2 reaction. Since methyl bromide has only three H atoms around the C, it will have a higher rate than ethyl bromide.

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