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Give a mechanism for the acid-catalysed...

Give a mechanism for the acid-catalysed dehydration of ethyl alcohol to form diethyl ether.

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To understand the acid-catalyzed dehydration of ethyl alcohol (ethanol) to form diethyl ether, we can break down the mechanism into several key steps: ### Step-by-Step Mechanism: 1. **Protonation of Ethyl Alcohol:** - Ethyl alcohol (C2H5OH) reacts with an acid (H+) to form an oxonium ion. The oxygen atom in the alcohol donates a lone pair of electrons to the proton (H+), resulting in the protonation of the hydroxyl group. - **Equation:** C2H5OH + H+ → C2H5OH2+ ...
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Knowledge Check

  • Dehydration of ethyl alcohol proceeds via

    A
    Carbonium ion
    B
    carbanion
    C
    Ethylium
    D
    Free radicals.

  • Dehydration of neophentyl alcohol gives

    A
    2-methyl but-1-ene
    B
    3-methyl but-1-ene
    C
    2-methyl but-2-ene
    D
    no product will be formed

  • Acid catalysed dehydration of 2-pentanol would give

    A
    1-pentene as a major product
    B
    cis 2-pentene as a major product
    C
    trans-2-pentene as a major product
    D
    cis- and trans - 2-pentene in equal amount.

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