Topic: Bond lengths of N-O (Read 6112 times)

Retep32 · « **on:** November 28, 2011, 10:43:46 AM »

Hi,

why are the lengths of the N-O bonds in Nitric acid almost the same? And why are they not exactly the same, like the ones in NO3- ?

Hope you can help me...

Retep

sjb · « **Reply #1 on:** November 28, 2011, 11:05:43 AM »

Quote from: Retep32 on November 28, 2011, 10:43:46 AM

Hi,

why are the lengths of the N-O bonds in Nitric acid almost the same? And why are they not exactly the same, like the ones in NO3- ?

Hope you can help me...

Retep

What is the bond order of the relevant bonds in NO₃^-? And in HNO₃? How do these differ?

Retep32 · « **Reply #2 on:** November 28, 2011, 02:09:28 PM »

Sorry, no idea.

fledarmus · « **Reply #3 on:** November 28, 2011, 08:23:03 PM »

Can you draw the structure of HNO₃?

If not, try looking here:

http://en.wikipedia.org/wiki/Nitric_acid

Retep32 · « **Reply #4 on:** November 28, 2011, 08:37:11 PM »

Yes, I understand that. So, NO3- doesn't have a H-atom and is therefor negative. Correct?
Is that the explanation for my question?

fledarmus · « **Reply #5 on:** November 28, 2011, 09:18:57 PM »

That is part of it. Also look at the bond order, as sjb suggested - remember that in general, double bonds are shorter than single bonds. And look at the possible resonance forms available for the two different structures - the actual structure will resemble a blend of the relevant resonance forms.

Topic: Bond lengths of N-O (Read 6112 times)

Retep32

Bond lengths of N-O

sjb

Re: Bond lengths of N-O

Retep32

Re: Bond lengths of N-O

fledarmus

Re: Bond lengths of N-O

Retep32

Re: Bond lengths of N-O

fledarmus

Re: Bond lengths of N-O

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