CHM_1321_Midterm_1_2008_Answers

CHM_1321_Midterm_1_2008_Answers - CHM 1321 C Midterm 1 -...

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1 CHM 1321 C Midterm 1 - ANSWERS February 8, 2008 Note: The points are given as a guide and are subject to minor changes. Surname: ____________________________ First name: ________________________ Student Number: _________________ 1. Identify the hybridization of the indicated atoms: (3 points) 1 point each C C CH 3 O sp 3 sp sp 2 4. Draw the complete Lewis structure for the following molecules: (4 points) - 1 per error a. (CH 3 ) 3 N N C C C H H H H H H H H H b. H N O C C C C C C N C C O H H H H H H H H H
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2 5. a) Draw the molecule below in using the LCAO method ( 4 5 points ). 1 point: labels for sp 2 and sp 3 orbitals 1 point: p orbitals labeled 1 point: correct molecule 2 points: molecular geometry H O b) Label all the orbitals in part a (p, sp, sp 2 , sp 3 ) ( 3 points ). 3/3 – perfect; 2/3 1 or 2 small errors; 1/3 many errors or concept not well understood c) Label all the bonds in part a ( σ , π ) ( 3 2 points ). 2/2 – perfect; 1/2 - good attempt; 0/2 – many errors C C C O H H H H π σ σ σ σ σ σ σ sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 2 sp 2 sp 2 sp
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This note was uploaded on 03/30/2012 for the course SCIENCE CHM 1321 taught by Professor Ogilvie during the Spring '09 term at University of Ottawa.

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CHM_1321_Midterm_1_2008_Answers - CHM 1321 C Midterm 1 -...

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