Question

WhichofthetwoO2NCH2CH2O - OrCH2CH2OH- isexpectedtobemore
stable?​

Answer 1

Answer:

stability of carboanions depends on the presence of electron withdrawing group. stability of carboanions is increase in the presence of electron withdrawing group while  decrease in the presence of electron releasing group. 

Here in the question, O₂N--CH₂---CH₂O⁻  is more stable carboanion than  CH₃---CHO⁻  because the presentation of --NO₂ group, and --NO₂ is electron withdrawing group due to this it has -I effect, this leads to the dispersal of negative charge. on the other hand -CH₃ group has +I effect{-CH₃ is electron releasing group } . this leads to the intensification of negative charge.

  As you know, in carboanions, dispersal of negative charge is more stable than intensification of negative charge.

that's why O₂N--CH₂---CH₂O⁻ is more stable .

Explanation:

hope you got it

Answer 2

O2NCH2CH2O- is expected to be more stable among the two ion

Explanation:

• this is because of the presence of the nitro group at the other end. The nitro group is electron withdrawing group.

• As a result of this the negative charge from the other end of the electron will move to the other side resulting in the stability of the compound. On the other hand hydroxyl group is a electron repelling group. Hence the negative charge will be repaired and hence the compound will be less stable

To know more,

C6H5 is electron withdrawing group or electron donating group ...

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