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Carboxylic acids donot give the characte...

Carboxylic acids donot give the characteristic reactions of carbonyl group. Explain.

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The carbonyl group in carboxylic acid is not a free group as in aldehydes and ketones. It is involved in resonance. Therefore, carboxylic acids fail to give te characteristic reactions of the carbonyl groups as are given by aldehdes and ketones.
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Assertion : Carbxoylic acids donot give characteristic reactions of carbonyl group. Reason : The carbonyl group is sterically hindered in carboxylic acid.

Statement 1: Carboxylic acids do not give characterstic reactions of carbonyl group. Statement 2 : Carboxylic acids exist as cyclic dimers in solid, liquid and even in vapour state

Carboxylic acids do not give the characteristic reactions of gt C =O group because of:

Knowledge Check

  • Carboxylic acids do not give the characteristic properties of

    A
    `-COOH` group
    B
    R-group
    C
    `gt C = O` group
    D
    none of the answers is correct

  • Assertion : Carbxoylic acids donot give characteristic reactions of carbonyl group. Reason : The carbonyl group is sterically hindered in carboxylic acid.

    A
    If both assertion and reason are correct and reason is correct explanation for assertion.
    B
    If both assertion and reason are correct but reason is not correct explanation for assertion.
    C
    If assertion is correct but reason is incorrect.
    D
    If assertion and reason are both incorrect.

  • Statement 1: Carboxylic acids do not give characterstic reactions of carbonyl group. Statement 2 : Carboxylic acids exist as cyclic dimers in solid, liquid and even in vapour state

    A
    Statement I is true, statement -2 is true: statement -2 is a correct explanation for statement -1
    B
    Statement -1 is true, Statement -2 is True , Statement-2 is NOT a correct explanation for statement -1
    C
    Statement -1 is true, Statement-2 is false,
    D
    Statement -1 is false, Statement -2 is true.
    • DINESH PUBLICATION-CARBOXYLIC ACIDS -ADDITIONAL IMPORTANT QUESTIONS
    1. Carboxylic acids donot give the characteristic reactions of carbonyl g...

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    2. Fromic acid reduces Tollen's reagent while other carboxylic acids dono...

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    3. 2, 4, 6-trimethylbenzoic acid is quite difficult to esterify. Assign r...

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    4. m-Hydroxybenzoic acid is a stronger acid than benzoic acid while p-hyd...

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    5. Why does not formic acid form an anhydride upon heating?

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    6. Completely anhydrous acetic has molecular mass of 120. Explain.

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    7. Why is peroxy acid weaker than carboxylic acid ?

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    8. Why is acetyl chloride a better acetylating agent than acetic acid ?

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    9. Chloroformic acid does not exist while chloroethylformate exists. Expl...

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    10. Carbon-oxygen bond lengths in formic acid are different but are the sa...

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    11. Phenate ion has more number of contributing structures than benzoate i...

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    12. Tertiary butyl benzene does not give benzoic acid when oxidised with K...

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    13. Fluorine is more electronegative than chlorine but p-fluorobenzoic aci...

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    14. CH(3)COO^(-) ion is more stable than C(2)H(5)O^(-) ion. Assign reason.

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    15. Peroxyacetic acid is a weaker acid than acetic acid. Explain.

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    16. Why are boiling of aldehydes and ketones lower than those of the corre...

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    17. Which out of each pair is expected to be a stornger acid ? (a) CH(3)...

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    18. What is glacial acetic acid ? Why is it so named ?

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    19. How will you prepare 2-methylbutanoic acid from butan-2-01 ?

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    20. How will you convert propionic acid to acetic acid ?

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