Is the C=O Bond Length Shortened Due to Resonance?

AI Thread Summary
The discussion centers on whether the C=O bond length is shortened due to resonance. It is established that double bonds are stronger than single bonds, which contributes to bond length reduction. However, the responder expresses skepticism about attributing this shortening specifically to resonance, suggesting that resonance applies mainly in more complex molecular structures. Ultimately, the conclusion reached is that the bond length is indeed shorter, but this is attributed to the inherent strength of double bonds rather than resonance effects. The responder's understanding aligns with the exam's answer, reinforcing their position.
Masschaos
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Homework Statement



The Questions asks if the C=O bond length is shortened due to resonance

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The Attempt at a Solution


Now, I know that double bonds are stronger than a single bond and the strength outweighs the repulsion by the electrons. I'm just hesitant to say that its true because I'm not sure about the 'due to resonance' part. I feel like it is trying to trip me up.
 
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AFAIK, the term http://en.wikipedia.org/wiki/Resonance_(chemistry)" in the context of chemistry only applies in some situations where there is more than two atoms. Did the problem give you an entire molecule?
 
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No, It said exactly that.
I had decided that the bond length was shorter, but not due to resonance. Due to the energy of double bonds and such, and I was correct according the the exam.
 
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