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Haloalkanes and Haloarenes
Question
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Which would undergo SN2 reaction faster in the following pair and why?

Answer

Sn2 reactions are bimolecular with simultaneous bond-making and bond-breaking steps. Primary alkyl halides prefer to undergo SN2 reactions than tertiary alkyl halides because of less steric hindrance experienced by the approaching nucleophile.

 Hence, out of the given pair, (CH3 –CH 2 – Br ) would undergo SN2 reaction faster.

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Some More Questions From Haloalkanes and Haloarenes Chapter

Why is sulphuric acid not used during the reaction of alcohols with KI?

Write structures of different dihalogen derivatives of propane.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions: