Which of the following is an electrophilic addition reaction ?

$C H_{2} = C H_{2} + H^{+} ⟶ C H_{3} - C H_{2}^{\oplus}$

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$C H_{3} - C H_{2}^{\oplus} + B r^{-} ⟶ C H_{3} C H_{2} B r$

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Both (a) and (b)

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None of these

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Solution

The correct option is A
$C H_{2} = C H_{2} + H^{+} ⟶ C H_{3} - C H_{2}^{\oplus}$

As the name suggests,

In this addition reaction, an electrophile is added to the molecule. $B r^{-}$ is a nucleophile and therefore,

$C H_{2} = C H_{2} + H^{+} ⟶ C H_{3} - C H_{2}^{\oplus}$ is correct

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