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Valence Bond Theory

Among the fol...

Question

Among the following, the most reactive compound towards alcoholic KOH is:

C H_{2} = C H - B r

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C H_{3} C O C H_{2} C H_{2} - B r

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C H_{3} - C H_{2} - B r

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C H_{3} - C H_{2} - C H_{2} - B r

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Solution

The correct option is A $C H_{3} C O C H_{2} C H_{2} - B r$
In alkyl halide, the polarity of C-Br bond increases with increase in the chain length.

$C H_{3} - C H_{2} - C H_{2} - B r$

Hence, option D is correct.

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S_{N} 2

K I

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β

K O H

C H_{3} - H | C | C H_{3} - C H_{2} B r

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

β

{C H}_{3} - H | C | {C H}_{3} - {C H}_{2} B r

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

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