CHEM 357 (Qatar) Recitation 1 (Fall 2008)

CHEM 357 (Qatar) Recitation 1 (Fall 2008) - Organic...

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Organic Recitation #1 August 17, 2008 Chemistry 357 - Qatar Organic Chemistry for the Life Sciences Recitation Exercises 1. ( 10 Marks ) A) Shown below are three sets of resonance structures . For each structure, i) provide the formal charge for ALL charged atoms and then ii) determine the net charge for each structure. NOTE: All valence electrons are shown in the form of covalent bonds or lone pairs. O C C H O H 3 C H O C C H O H 3 C H Net charge: ________ Net charge: ________ C C C C C C N O O H H H H H C C C C C C N O O H H H H H Net charge: ________ Net charge: ________ O N CH 3 N O CH 3 Net charge: ________ Net charge: ________ B) ( 2 Marks ) What do you notice about the net charge of resonance structures?
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2. ( 6 Marks ) Using abbreviated or “condensed structural formulas” (indicating all C and H atoms as shown below), draw ALL alkanes having the molecular formula C 6 H 14 . Now, represent each structure using line or “skeletal structures”. Provide an IUPAC
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This note was uploaded on 10/26/2008 for the course CHEM 3570 taught by Professor Ganem, b during the Fall '06 term at Cornell.

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CHEM 357 (Qatar) Recitation 1 (Fall 2008) - Organic...

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