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  • Help me please, - Some Basic Principles of Organic Chemistry - JEE Main

In the anion HCOO^{-}  the two carbon-­oxygen bonds are found to be of equal length. What is the reason for it?

  • Option 1)

    Electronic orbitals of carbon atom are hybridised.

  • Option 2)

    The C=O bond is weaker than the C-O bond

  • Option 3)

    The anion HCOO^{-}  has two resonating structures.

  • Option 4)

    The anion is obtained by removal of a proton from the acid molecule

 

Answers (5)

best_answer

As we have learned

Mesomeric or Resonance effect -

Migration of lone pair or \pielectron in a conjugated system.

- wherein

It is a permanent effect

 

 Because of resonance both of the carbon oxygen bond are of same length as both bond attains \pi - bond character 

 


Option 1)

Electronic orbitals of carbon atom are hybridised.

Option 2)

The C=O bond is weaker than the C-O bond

Option 3)

The anion HCOO^{-}  has two resonating structures.

Option 4)

The anion is obtained by removal of a proton from the acid molecule

Posted by

solutionqc

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In HCOO-ion two carbon-oxygen bonds are found to be of equal length because this ion is stabilized by resonance and in resonance both C-O bonds have partial double bond character.

Posted by

Amit Kumar

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Yes, you are right.

Posted by

Rakesh

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option3: The anion HCOO^{-} has two resonating structure.

Posted by

Rakesh

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