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The dehydration of alcohols to form alke...

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

Text Solution

Verified by Experts

The correct Answer is:
A
`CH_(3)CH_(2)OHunderset(H_(2)SO_(4),170^(@)C)overset("Excess concentrated")rarrCH_(2)=CH_(2)`
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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?

By Dehydration Of Alcohols

Knowledge Check

  • 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.

  • Dehydration of alcohols to form alkenes is favored at

    A
    lower temperature
    B
    higher temperature
    C
    moderate temperature
    D
    room temperature

  • Dehydration of alcohols to ethers is catalysed by

    A
    Conc. `H_(2)SO_(4)` at 413 K
    B
    Hot NaOH
    C
    hot HBr
    D
    hot `HNO_(3)`

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    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.

    Dehydration of alcohols to alkenes is always carried out with conc. H_2SO_4 and not with HCl or HNO_3 . Explain .

    Explain the mechanism of the following reactions : (i) Addition of Grignard reagent to a carbonyl compound forming an adduct followed by hydrolysis. (ii) Acid catalysed dehydration of alcohol forming an alkene. (iii) Acid catalysed hydration of an alkene forming an alcohol.

    During the dehydration of alcohols to alkenes by heating with conc. H_(2)SO_(4) , the initiating step is :

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

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