Quiz 2 Prep. Question 6  [ENDORSED]

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Andrew Uesugi 3I
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Quiz 2 Prep. Question 6

Postby Andrew Uesugi 3I » Mon Oct 24, 2016 10:59 am

So the question is asking me the resonance for (NH2)COCH3

I've managed to find one structure for it. But I can't seem to find the other, unless I change the formal charge of the compound. Is that what I'm supposed to do?

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Re: Quiz 2 Prep. Question 6  [ENDORSED]

Postby Chem_Mod » Mon Oct 24, 2016 1:11 pm

The formal charges of atoms in a molecule that undergoes resonance will change between resonance structures.

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Re: Quiz 2 Prep. Question 6

Postby Chem_Mod » Mon Oct 24, 2016 1:12 pm

If it's asking you for multiple structures, then do draw the one with formal charges, just try not to generate charges +/-2 or greater. If you're asked to compare the structures, then the one with fewer formal charges on atoms is the major structure.

melissagonzalez1c
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Re: Quiz 2 Prep. Question 6

Postby melissagonzalez1c » Mon Oct 24, 2016 7:46 pm

Andrew Uesugi 3I wrote:So the question is asking me the resonance for (NH2)COCH3

I've managed to find one structure for it. But I can't seem to find the other, unless I change the formal charge of the compound. Is that what I'm supposed to do?


How did you find the structure? I've been trying to do it for the past twenty minutes and I still can't figure it out. The way the molecule is written is throwing me off and I don't know how to arrange the atoms, except for Oxygen being the central atom. :/

emilyclause
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Re: Quiz 2 Prep. Question 6

Postby emilyclause » Mon Oct 24, 2016 9:39 pm

Are sigma and pi bonds going to be on the quiz?

melissagonzalez1c
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Re: Quiz 2 Prep. Question 6

Postby melissagonzalez1c » Mon Oct 24, 2016 10:23 pm

emilyclause wrote:Are sigma and pi bonds going to be on the quiz?


We haven't covered that in class, so no. Quiz 2 is only the end of chapter 2 and all of chapter 3, just what we've covered during lecture.

alvitaxiao
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Re: Quiz 2 Prep. Question 6

Postby alvitaxiao » Tue Oct 25, 2016 1:06 am

Andrew Uesugi 3I wrote:So the question is asking me the resonance for (NH2)COCH3

I've managed to find one structure for it. But I can't seem to find the other, unless I change the formal charge of the compound. Is that what I'm supposed to do?


From what I got, in one of the structures theres a double bond between the N and C and in the resonance structure the double bond is between the C and O

NicholasKillmeier3K
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Re: Quiz 2 Prep. Question 6

Postby NicholasKillmeier3K » Wed Oct 26, 2016 8:58 pm

alvitaxiao wrote:
Andrew Uesugi 3I wrote:So the question is asking me the resonance for (NH2)COCH3

I've managed to find one structure for it. But I can't seem to find the other, unless I change the formal charge of the compound. Is that what I'm supposed to do?


From what I got, in one of the structures theres a double bond between the N and C and in the resonance structure the double bond is between the C and O


That is the only conclusion that I have been able to come to as well.


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