Exam_1-Chem35-2005_Answers

Exam_1-Chem35-2005_Answers - Name_ SISD_ Chemistry 35 Exam...

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Name____________________________ SISD________________________ 1 Chemistry 35 Exam 1 - Answers February 24, 2005 1) (20 points) In parts A - C, draw all lone pairs and all formal charges. A) (8 points) Draw two resonance structures for the molecule shown below. Both structures must have full octets on all atoms other than hydrogen. Circle the resonance structure that is lower in energy (i.e. contributes more to the resonance hybrid). Indicate the correct hybridization (sp 3 , sp 2 , or sp) for all atoms except hydrogen. H 3 CCNO CC N O H H H N O H H H sp3 sp sp sp2 sp3 sp sp sp2 B) (8 points) Draw two resonance structures for the molecule shown below. Both structures must have full octets on all atoms other than hydrogen. Circle the resonance structure that is lower in energy (i.e. contributes more to the resonance hybrid). Indicate the correct hybridization (sp 3 , sp 2 , or sp) for all atoms except hydrogen. H 3 COCN CO C N H H H C N H H H sp3 sp sp2 sp sp3 sp sp2 sp
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Name____________________________ SISD________________________ 2 C) (4 points) Draw one resonance structure for the molecule shown below. The structure must have full octets on all atoms other than hydrogen. Indicate the correct hybridization (sp 3 , sp 2 , or sp) for all atoms except hydrogen. H 3 CONC CO N C H H H sp3 sp sp2 sp 2) (10 points) For the molecule shown below, draw all resonance structures that have a full octet of electrons on every atom (except for hydrogen). Circle the resonance structure that is most stable (i.e. contributes most to the hybrid).
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This note was uploaded on 05/17/2008 for the course CHEM 0350 taught by Professor Suggs during the Spring '08 term at Brown.

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Exam_1-Chem35-2005_Answers - Name_ SISD_ Chemistry 35 Exam...

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