Question

Which molecule has the strongest carbon-oxygen bond? I know the answer is CO, im looking for...

Which molecule has the strongest carbon-oxygen bond? I know the answer is CO, im looking for an explanation of why that answer is correct.

CO​3​​2-    HCO​3

CH2O    CO2   ​ CO   

​

Science   Chemistry   
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Answer #1

As mentioned CO has the stronger C-O bond.

First let us understand the following. The shorter the distance between the molecules, stronger the bond. Adouble bond is shorter than a single bond. This means a double bond is stronger than a single bond. It is not necessary that it has to be double as strong as the energy in pi is less than a sigma bond. A triple bond is stronger than a double bond. Hence when we compare the double bonds in CO2 to the triple bonds in the CO molecule, the triple bond is stronger.

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