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Alcohols can act both as acids and bases...

Alcohols can act both as acids and bases. Explain.

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Alcohols can act as acids in strongly basic medium by releasing `H^(+)` ion. Similarly, they can act as Lewis bases in the acidic medium.
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Knowledge Check

  • The species which can act both as Bronsted acid and base is

    A
    `CO_3^2-`
    B
    `NO_3^-`
    C
    `HSO_4^-`
    D
    `SO_4^2-`

  • Which among the following species can act as both acid and base as per Bronsted theory ?

    A
    `(HSO_(4))^(-1)`
    B
    `NH_(3)`
    C
    `OH^(-)`
    D
    `Na_(2)CO_(3)`

  • Assertion : Aldol condensation can be catalysed can be cataysed both acid and bases. Reason : beta - hydroxy aldehydes or ketones readily undergo acid catalysed dehydration.

    A
    If Both assertion and reason are true reason is a true explation of the assertion.
    B
    If Both assertion and reason are true but the reason is not the correct explation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.
    • DINESH PUBLICATION-ALCOHOLS AND PHENOLS-ADDITIONAL IMPORTANT QUESTION
    1. Alcohols can act both as acids and bases. Explain.

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    2. Sodium metal can not be used for drying alcohols. Assign reason.

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    3. At room temperature tertiary alcohols form white turbidity very fast w...

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    4. Predict the product of the reaction between HBr and but -2-en-1-ol.

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    5. Hydration of 3-phenylbut-1-ene in dilute H(3)SO(4) forms 2-pheylbutan ...

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    6. When t-butanol and n-butanol are separately treated with a few drops o...

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    7. 3,3-dimethylbutan-2-ol losses a molecule of water in the presence of c...

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    8. What is the structure of the major product when 3-ethylpent -2-ene is ...

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    9. p-nitrophenol is a stronger acid than phenol while p-cresol is a weake...

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    10. How do you account for the fact that unlike phenol, 2, -dinitrophenol ...

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    11. Alcohols react with halogen acids as well as phosphorus halides to for...

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    12. The order of reactivity of alcohols in the esterification reaction is ...

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    13. Dehydration of alcohol to form an alkene is always carried out with co...

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    14. Why is phenol acidic and hexanol neutral towards solution of NaOH ?

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    15. Which of the following is the most reactive towards attack by an elect...

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    16. Why is cyclohexanol more soluble in water than hexan-1-ol ?

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    17. How will you distinguish between CH(3)(CH(2))(3)OH and CH(3)CH=CHCH(2)...

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    18. Why can not anhydrous calcium chloride be used for drying ethyl alcoho...

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    19. What happens when propan-1-ol is treated with ethanoic acid in the pre...

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    20. How will you distinguish between allyl alcohom and n-propyl alcohol ?

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