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Dehydration of alcohols to form alkenes ...

Dehydration of alcohols to form alkenes is favored at

A

lower temperature

B

higher temperature

C

moderate temperature

D

room temperature

Text Solution

Verified by Experts

The correct Answer is:
B
The reaction is an elimination. Heating most alcoholes with a strong acid causes them to lose a molecule of water ( to dehydrate) and form an alkane:
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Dehydration of alcohols to form alkenes is always carried out with conc. H_(2)SO_(4) and not witth conc. HCl or HNO_(3) , explain why?

Dehydration of alcohol to form an alkene is always carried out with concentrated H_(2)SO_(4) and not with concentrated HCl or HNO_(3) . Explain.

Knowledge Check

  • The dehydration of alcohols to form alkenes is catalyzed by

    A
    an acid
    B
    a base
    C
    either an acid or a base
    D
    neither an acid nor a base

  • Dehydration of alcohols to give alkenes is catalysed by :

    A
    `"Conc. "H_(2)SO_(4)" at 413 K"`
    B
    `"Conc. "H_(2)SO_(4)" at 443 K"`
    C
    `"Conc. "H_(2)SO_(4)" at 383 K"`
    D
    None of these.

  • In the acid catalyzed dehydration of alcohols to alkenes, the intermediate species formed is

    A
    Free radical
    B
    Carbocation
    C
    Carbanion
    D
    Carbene

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    During dehydration of alcohols to alkenes by heating with concentrated H_(2)SO_(4) the initiation step is

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