Write the name of the major organic product formed in the reaction of 1-pentene with HCl.

1-chloropentane

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2-chloropentane

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3-chloropentane

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None of these

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Solution

The correct option is B 2-chloropentane
1-pentene reacts with hydrogen chloride to form 2-chloropentane. This is an example of electrophilic addition reaction. The addition occurs according to Markownikoff's rule.

$C H_{2} = C H C H_{2} C H_{2} C H_{3} + H C l \to C H_{3} C H C l - C H_{2} C H_{2} C H_{3}$
Hence, the correct option is B.

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