Functional Groups  [ENDORSED]

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204635822
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Joined: Fri Sep 25, 2015 3:00 am

Functional Groups

Postby 204635822 » Sat Mar 05, 2016 5:57 pm

Are we responsible for knowing all functional groups on page 46, or just the ones we talked about during lecture?

Jasminemay Barcelon 2G
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Re: Functional Groups

Postby Jasminemay Barcelon 2G » Sat Mar 05, 2016 6:29 pm

I believe we do since we covered most of the functional groups within that chart in the course reader and we discussed them in lecture and sections, but if we aren't responsible for them, it doesn't hurt to know them.

Ryan Cerny 3I
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Re: Functional Groups

Postby Ryan Cerny 3I » Sat Mar 11, 2017 3:31 pm

Are we expected to be able to name compounds with multiple functional groups?

Joyce Zhang 2D
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Re: Functional Groups

Postby Joyce Zhang 2D » Sat Mar 11, 2017 5:21 pm

No, Dr. Lavelle said in lecture we won't be covering multiple functional groups, but a functional group may be paired up with substituents.

Esther_Choe_1K
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Re: Functional Groups

Postby Esther_Choe_1K » Sat Mar 11, 2017 10:30 pm

For the amine functional groups, where N is bonded to one or more carbon chains, when N is bonded to four carbon chains it has a charge of 1+. When Nitrogen is bonded to three carbon chains it has no charge. In general, how do we know how many bonds it takes for an atom to have no charge? Thank you!

Chem_Mod
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Re: Functional Groups  [ENDORSED]

Postby Chem_Mod » Sun Mar 12, 2017 12:00 pm

Esther_Choe_1K wrote:For the amine functional groups, where N is bonded to one or more carbon chains, when N is bonded to four carbon chains it has a charge of 1+. When Nitrogen is bonded to three carbon chains it has no charge. In general, how do we know how many bonds it takes for an atom to have no charge? Thank you!


Calculate the formal charge: FC = V - (L + S/2)

I did this in class again in Chem 14B to remind students that one can use formal charge to figure this out.

PriscillaMariscal_3F
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Joined: Fri Jul 15, 2016 3:00 am

Re: Functional Groups

Postby PriscillaMariscal_3F » Sun Mar 12, 2017 3:46 pm

@Ryan, Dr. Lavelle said we won't be covering multiple functional groups until 14C/CL/D.

Caleb Lim 2M
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Joined: Wed Sep 21, 2016 2:55 pm

Re: Functional Groups

Postby Caleb Lim 2M » Wed Mar 15, 2017 8:44 pm

When and where will we be required to know the charge of a substituent? Does it have to do with it being a nucleophile or ellectrophile? (why would we need to know the formal charge)


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