CHEM301 F08 CA2 key

CHEM301 F08 CA2 key - CHEM301, Fall 2008 Dr. Ruder 1 Class...

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CHEM301, Fall 2008 Dr. Ruder 1 Class Activity 2 Drawing Organic Structures Organic structures can be drawn in different ways to show the same compound. Model 1: Representing Organic Structures The three main ways of representing organic structures in two dimensions are shown below. Lewis Condensed Line-angle (skeletal) C H H H C H Br C H H H CH 3 CHBrCH 3 or CH 3 CHCH 3 Br Br C H H H C H H C H H C H H OH CH 3 (CH 2 ) 2 CH 2 OH OH C H H H C O C H H H or CH 3 CCH 3 O CH 3 COCH 3 O C C H C H C H H H C C C C H H H H H H H H H C 5 H 9 CH 2 CHCH 2 or C 5 H 9 CH 2 CH=CH 2 Questions: 1. (a). How are bonds represented in the Lewis structures? (b). Are all bonds to every atom in the Lewis structures shown? 2. (a). How do condensed structures differ from Lewis structures? (b). Are all bonds to every atom in the condensed structures shown?
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CHEM301, Fall 2008 Dr. Ruder 2 (c). In the condensed structures reading left to right, which atom always appears first (on the left)? Which atom always follows this first atom?
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This note was uploaded on 02/17/2011 for the course CHEM 301 taught by Professor Sahli during the Fall '07 term at VCU.

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CHEM301 F08 CA2 key - CHEM301, Fall 2008 Dr. Ruder 1 Class...

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