W11 - CHEMISTRY 114 - Spring 2010 Dr. Audrey Dell Hammerich...

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Unformatted text preview: CHEMISTRY 114 - Spring 2010 Dr. Audrey Dell Hammerich 11 - Week of March 29 Bonding Theories I: Valence Bond NOTE: Quiz in discussion section this week on Chapters 7—10. NOTE: To pass this course a minimum of thirteen labs must be completed and the appropriate notebook laboratory report submitted for each. While all missed labs will receive a grade of zero there is an opportunity to turn in missing laboratory reports for labs which were attended but no lab report was submitted. Late lab reports will be accepted until 4:30 pm Friday, April 2. It is highly suggested that these be given directly to your TA though they can be turned in at the Chemistry Department. LAB ASSIGNMENT: CASPiE Module Laboratory 2 - Dansyl Chloride Fluorescence LECTURE ASSIGNMENT: LECTURE ASSIGNMENT: On-line ALEKS assigned objec— - tive (Valence Bond Theory) is due 11:59 pm Sunday, March 14. As there are only 4 topics in the ALEKS homework a few questions from the Carey assigned reading will be added: Problems V 1.20, 1.21, and 1.22.- These problems are to be handed in to your TA at your discussion section. Monday, March 29 Reading Assignment: Chapter 11.1 and Carey handout 1.12, 1.13, 1.15 — 1.18 [understand what hybrid orbitals: sp3, spz, sp are and be able to identify them] Recommended Problems: Chapter 11 —#1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19 Carey - Problems l.20,'1.21 Wednesday, March 31 Reading Assignment: Chapter 11.1 —11.1 and Carey handout 1.12, 1.13, 1.15 — 1.18 [know the relationship between steric number and hybridization; know how to recognize sigma, 0', and pi, 7r, bonds} , . .. Recommended Problems: V Chapter 11 - #20, 21, 22, 23, 24, 39, 42, 45, 47, 49, 50, 54 Carey — Problem 1.22 Friday, April 2 Reading Assignment: Chapter 11.1 — 11.2 and Carey handout 1.12, 1.13, 1.15 — 1.20 (excellent overview — be sure to read the Summary) [be able to recognize single, double, and triple bonds; be able to identify cis and trans isomers]; Chapter 15.3 [understand the bonding in the condensed structures containing carbon in this section and Figure 15 .2] Recommended Problems: Chapter 11 — #40, 41, 43, 44, 46, 48, 51, 53, 55, 56 -2- CHEMISTRY 114 - Spring 2010 Dr. Audrey Dell Hammerich Worksheet - Week 11 " it 22 ‘l ‘3“ 1. For the two molecules shown on the right ‘ _C_C_H o - O . . . . HO 1 \ / \ // a) G1ve the hybr1d1zatlon (be sure to check the number of H /C /C electron pairs) of all carbon, nitrogen, and oxygen atoms. H \Czc / \ HO OH H | ‘7‘ T” rig—H b) Tell which of the bonds are conjugated. H 30:; | 'O—H 2. Acetone (C3H6O) has a chain of three C atoms with H atoms bonded to the end C atoms and an O bonded to the central C. a) Draw its Lewis structure. b) Give the hybridization of the three C andO atoms. c) Estimate the bond angles about each of the C atoms. 3. For NO; draw its Lewis structure, give the hybridization, a and 7: bonds, bond angle, and the bond order. 4. For the compound CHZCHCHCHZ (four C atoms form a chain) a) Determine the number of valence electrons b) Draw the Lewis structure. c) Determine the hybridization of each C atom. d) Find the number of 0 and 7: electrons. 5. For the cyclic compound C4H4 (four C atoms form a ring - square) a) Determine the number of valence electrons b) Draw the Lewis structure. c) Determine the hybridization of each C atom. d) Find the number of 0' and 7t electrons. 6. Fill in the following table where each carbon atom has at least one hydrogen atom bonded to it. carbons in a chain _ carbons in. a ring # valence e— hybridization of C Lewis structure (be sure to include all resonance structures) ...
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W11 - CHEMISTRY 114 - Spring 2010 Dr. Audrey Dell Hammerich...

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