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Dehydrohalogenation for Alkenes

Which of the ...

Question

Which of the following alcohols is most reactive towards metallic sodium?

C H_{3} C H_{2} C H_{2} C H_{2} O H

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C H_{3} C H_{2} C H_{2} O H

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(C H_{3})_{3} C O H

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C H_{3} - C H_{2} - O H | C H - C H_{3}

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Solution

The correct option is B $C H_{3} C H_{2} C H_{2} O H$
The reactivity order of alcohols towards metallic sodium is $T e r t i a r y < S e c o n d a r y < P r i m a r y$

More the chain length in case of primary alcohol more is the $+ I - e f f e c t$ which will stabilise the anion.
Hence, Option B is the correct answer.

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