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Aldehydes and ketones ar specially susec...

Aldehydes and ketones ar specially susecptible to nucleophilic addition because carbonyl group is polar (due to electronegativity difference between carbon and oxygen)

Positive charge on carbon makes it reactive towards the nucleophili. This addition is catalysed by acid.
Reactivity of carbonyl compound towards nucleophilic addition increases with increases in the electron deficiency at carbonyl carbon. Thus, (-I.E.)groups increase while (+I.E.) groups decrease the reactivity of carbonyl compound.
Which among the following is most reactive to give nucleophilic addtion ?

A

`FCH_(2)CHO`

B

`ClCH_(2)CHO`

C

`BrCH_(2)CHO`

D

`ICH_(2)CHO`

Text Solution

Verified by Experts

The correct Answer is:
A
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Aldehydes and ketones ar specially susecptible to nucleophilic addition because carbonyl group is polar (due to electronegativity difference between carbon and oxygen) Positive charge on carbon makes it reactive towards the nucleophili. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases with increases in the electron deficiency at carbonyl carbon. Thus, (-I.E.)groups increase while (+I.E.) groups decrease the reactivity of carbonyl compound. Select the least reactive carbonyl compound for nucleophilic addition :

Aldehyde and ketones are specially susceptible susceptible to nucleophile addition because carbonyl group (due to electronegatvity different between carbon and oxygen). Positive charge on carbon makes it reactive towards the nucleophile. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases in the electron deficience at carbonyl carbon. Thus, (-I.E.) group increase while (+I.E.) groups decrease the reactivity of carbonyl compound Which of the following is most reactve to give nucleophilic addition?

The order of reactivity of carbonyl compounds for nucleophilic addition is

Knowledge Check

  • Aldehydes and ketones ar specially susecptible to nucleophilic addition because carbonyl group is polar (due to electronegativity difference between carbon and oxygen) Positive charge on carbon makes it reactive towards the nucleophili. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases with increases in the electron deficiency at carbonyl carbon. Thus, (-I.E.)groups increase while (+I.E.) groups decrease the reactivity of carbonyl compound. Which among teh following carbonyl compounds is most pola?

    A
    B
    C
    D

  • Aldehydes and ketones ar specially susecptible to nucleophilic addition because carbonyl group is polar (due to electronegativity difference between carbon and oxygen) Positive charge on carbon makes it reactive towards the nucleophili. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases with increases in the electron deficiency at carbonyl carbon. Thus, (-I.E.)groups increase while (+I.E.) groups decrease the reactivity of carbonyl compound. Select the least reactive carbonyl compound for nucleophilic addition :

    A
    `C_(6)H_(5)-overset(O)overset(||)C-C_(6)H_(5)`
    B
    `C_(6)H_(5)-overset(O)overset(||)C-CH_(3)`
    C
    `C_(6)H_(5)-overset(O)overset(||)C-H`
    D
    `CH_(3)-overset(O)overset(||)C-H`

  • Aldehydes and ketones ar specially susecptible to nucleophilic addition because carbonyl group is polar (due to electronegativity difference between carbon and oxygen) Positive charge on carbon makes it reactive towards the nucleophili. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases with increases in the electron deficiency at carbonyl carbon. Thus, (-I.E.)groups increase while (+I.E.) groups decrease the reactivity of carbonyl compound. Carbonyl compounds show nucleophilic addition with :

    A
    HCN
    B
    `NaHSO_(3)`
    C
    `(CH_(3)OH+HCl)`
    D
    all of these