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

  • a)
    The C = O bond is weaker than the C — O bond

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

  • c)
    Electronic orbitals of carbon atom are hybridised 

  • d)
    The anion HCOO has two resonating structures

Correct answer is option 'D'. Can you explain this answer?
Verified Answer
In the anion HCOO– the two carbon-oxygen bonds are found to be o...
The anion HCOO has two resonating structures in which double bond occurs on both xygen atoms. So, the bond length of both the CO bonds is equal.

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In the anion HCOO– the two carbon-oxygen bonds are found to be o...
Explanation:

The anion HCOO– is the conjugate base of formic acid (HCOOH). It is formed by the removal of a proton (H+) from the acid molecule. In the HCOO– anion, the two carbon-oxygen bonds are found to be of equal length.

Reason:

The reason for the equal length of the carbon-oxygen bonds in the HCOO– anion is the presence of two resonating structures.

Resonance:
Resonance is a phenomenon in which the electrons in a molecule are delocalized or spread out over multiple atoms or bonds. Resonance structures are different possible forms of a molecule that can be obtained by moving electrons. Resonance structures are represented by drawing multiple Lewis dot structures, with double-headed arrows between them.

Resonating Structures of HCOO–:
In the case of the HCOO– anion, there are two possible resonating structures. One structure has a double bond between the carbon and one oxygen atom, while the other structure has a double bond between the carbon and the other oxygen atom.

HCOO– structure 1: H–C=O:
HCOO– structure 2: H–C–O:

Equal Length of Carbon-Oxygen Bonds:
In the resonating structures of HCOO–, the carbon-oxygen bonds alternate between single and double bonds. This delocalization of electrons results in the equal distribution of electron density between the two carbon-oxygen bonds. As a result, the carbon-oxygen bonds have equal strength and length.

Conclusion:
Therefore, the reason for the equal length of the carbon-oxygen bonds in the HCOO– anion is the presence of two resonating structures. Resonance allows for the delocalization of electrons and equal distribution of electron density between the carbon-oxygen bonds.
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Community Answer
In the anion HCOO– the two carbon-oxygen bonds are found to be o...
Option B is correct...
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In the anion HCOO– the two carbon-oxygen bonds are found to be of equal length. what is the reason for it ?a)The C = O bond is weaker than the C — O bondb)The anion is obtained by removal of a proton from the acid moleculec)Electronic orbitals of carbon atom are hybridisedd)The anion HCOO– has two resonating structuresCorrect answer is option 'D'. Can you explain this answer?
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