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Acids do not give the characteristic rea...

Acids do not give the characteristic reaction of `(C=O)` group because of :

A

Dimerisation

B

Resonance

C

Cyclic structures

D

Attached alkyl radical

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Acids are resonanace stabilised.
.
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Knowledge Check

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

    A
    polar nature
    B
    resonance
    C
    symmetrical structure
    D
    attached alkyl group

  • 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
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    D
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  • Assertion : Carboxylic acids contain a carbonyl group but donot give the characteristic reactions of the group. Reason : The electrophilicity of the carbon atom is more in carboxylic acids than in aldehydes and ketones.

    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.

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    Give reasons for the following : (a) Carboxylic acids do not give characteristic reactions of carbonyl group. (b) Treatment of benzaldehyde with HCN gives a mixture of two isomers which cannot be separated even by careful fractional distillation. (c) Sodium bisulphite is used for the purification of aldehydes and ketones.

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    Assertion: Carboxylic acids contain a carbonyl group but do not give characteristic reactions of the carbonyl group. Reason: Due to resonance, the electrophilic nature of the carboxyl carbon is greatly reduced as compared to the carbonyl carbon in aldehydes and ketones.

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