Friday, 12 September 2014

Explain the important aspects of resonance with reference to the CO32- ion.

Question 4.11:
Explain the important aspects of resonance with reference to the CO32- ion.
Answer
According to experimental findings, all carbon to oxygen bonds in CO32- are equivalent.
Hence, it is inadequate to represent CO32- ion by a single Lewis structure having two single bonds and one double bond.
Therefore, carbonate ion is described as a resonance hybrid of the following structures:
Resonating structure of CO3-2

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