Question on 3.41

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Katelyn Li 2J
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Joined: Wed Sep 21, 2016 3:00 pm

Question on 3.41

Postby Katelyn Li 2J » Mon Oct 24, 2016 5:20 pm

For the last part of this question, it asks to draw the Lewis structure for H2C(NH2)COOH. How do you know what order to draw the structure in? I thought that for compounds like this, it was usually drawn in the same order it was written in, but the solutions manual puts NH2 on the far left. Also, how do you know that the two oxygen atoms are not directly bonded to each other?

Eugenia Kwon 3O
Posts: 18
Joined: Wed Sep 21, 2016 2:59 pm

Re: Question on 3.41

Postby Eugenia Kwon 3O » Mon Oct 24, 2016 5:50 pm

The order that you draw them in is presented by the name of the compound.
NH2 and COOH are functional groups in organic compounds, so they always have the same structure (in which for NH2 two H's are bonded to N and for COOH, one O shares a double bond with C while the other O shares a bond with C and H) In the structure of Glycine, it doesn't matter whether the NH2 is placed at the end; as long as its connected to the Carbon in CH2, it should be fine.

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