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STATEMENT -1: Rate of Nucleophillic addi...

STATEMENT -1: Rate of Nucleophillic addition of p- Nitrobenzaldehyde is faster then p- Methoxybenzaldehyde
STATEMENT -2: Presence of electron withdrawing group increases rate of Reactionn in carbonyl compound for Nuclephillic reaction.

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To evaluate the statements given in the question, we will analyze each statement step by step. ### Step 1: Understanding the Structures - **Para-Nitrobenzaldehyde**: This compound has a nitro group (-NO2) at the para position relative to the aldehyde group (-CHO). - **Para-Methoxybenzaldehyde**: This compound has a methoxy group (-OCH3) at the para position relative to the aldehyde group. ### Step 2: Analyzing the Effect of Substituents - **Electron-Withdrawing Groups (EWGs)**: The nitro group is an electron-withdrawing group. It pulls electron density away from the benzene ring and the carbonyl carbon, making the carbonyl carbon more electrophilic (more positive). This increases the rate of nucleophilic addition. - **Electron-Donating Groups (EDGs)**: The methoxy group is an electron-donating group. It donates electron density to the benzene ring and the carbonyl carbon, making the carbonyl carbon less electrophilic. This decreases the rate of nucleophilic addition. ### Step 3: Comparing the Rates of Nucleophilic Addition - Since para-nitrobenzaldehyde has an electron-withdrawing nitro group, it will undergo nucleophilic addition faster than para-methoxybenzaldehyde, which has an electron-donating methoxy group. ### Conclusion for Statement 1 - **Statement 1 is True**: The rate of nucleophilic addition of para-nitrobenzaldehyde is indeed faster than that of para-methoxybenzaldehyde. ### Step 4: Evaluating Statement 2 - **Statement 2**: The presence of an electron-withdrawing group increases the rate of reaction in carbonyl compounds for nucleophilic reactions. - This statement is consistent with our previous analysis. Electron-withdrawing groups increase the electrophilicity of the carbonyl carbon, thus enhancing the rate of nucleophilic addition. ### Conclusion for Statement 2 - **Statement 2 is True**: The presence of an electron-withdrawing group does increase the rate of nucleophilic addition reactions in carbonyl compounds. ### Final Conclusion Both statements are true. ---

To evaluate the statements given in the question, we will analyze each statement step by step. ### Step 1: Understanding the Structures - **Para-Nitrobenzaldehyde**: This compound has a nitro group (-NO2) at the para position relative to the aldehyde group (-CHO). - **Para-Methoxybenzaldehyde**: This compound has a methoxy group (-OCH3) at the para position relative to the aldehyde group. ### Step 2: Analyzing the Effect of Substituents - **Electron-Withdrawing Groups (EWGs)**: The nitro group is an electron-withdrawing group. It pulls electron density away from the benzene ring and the carbonyl carbon, making the carbonyl carbon more electrophilic (more positive). This increases the rate of nucleophilic addition. ...
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Knowledge Check

  • Increasing rate of S_(N)1 reaction in the following compounds is

    A
    `(I) lt (II) lt (III) lt (IV)`
    B
    `(II) lt (I) lt (III) lt (IV)`
    C
    `(I) lt (II) lt (IV) lt (III)`
    D
    `(II) lt (I) lt (IV) lt (III)`
  • Arrange the compounds in increasing order of rate of reaction towards nucleophilic substitutions.

    A
    `(i) lt (ii) lt (iii)`
    B
    `(iii) lt (ii) lt (i)`
    C
    `(i) lt (iii) lt (ii)`
    D
    `(iii) lt (i) lt (ii)`
  • Arrange the compounds in increasing order of rate of reaction towards nucleophilic substitutions.

    A
    `(i) lt (ii) lt (iii)`
    B
    `(ii) lt (i) lt (iii)`
    C
    `(iii) lt (ii) lt (i)`
    D
    `(i) lt (iii) lt (ii)`
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