CHM2210F11EXIIV3

CHM2210F11EXIIV3 - NAME LAST FIRST Panther ID SECTION A.M P.M(Circle One FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry Biochemistry CHM

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NAME___________________________________ ___________________________ LAST FIRST Panther ID SECTION: A.M. P.M. (Circle One) FLORIDA INTERNATIONAL UNIVERSITY CHM 2210-U01, U02 – ORGANIC CHEMISTRY I Fall 2011 Dr. Keller Dr. Landrum EXAM II (V3)
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CHM 2210 U01,02, Fall 2011 Exam II, V3, Page 2 1. How many sp 3 -sp 2 σ bonds are there in the following substance? ( hint: ID the hybridization of each C first ) A) 1 B) 2 C) 3 D) 6 E) 8 2. What shape does the methyl cation, CH 3 1+ , have? A) Octahedral B) Tetrahedral C) Trigonal planar D) Linear E) Trigonal pyramidal 3. Select the LEAST polar bond. A) C-O B) C-H C) C-F D) N-F E) N-H 4. Indicate the hybridization of the elements (except for the hydrogens) in the following compound: A) x – sp 2 ; y - sp 2 ; z - sp 2 B) x – sp 2 ; y – sp 3 ; z – sp 3 C) x – sp; y - sp 2 ; z – sp 3 D) x – sp 2 ; y - sp 2 ; z – sp 3 E) None of these choices is correct 5. Hydrogen bonding A) is a common intermolecular attractive force in alkanes. B) requires at least one N-H, O-H, or F-H bond. C) can occur between a compound and water even if the compound cannot hydrogen bond with itself. D) is the weakest intermolecular attractive force. E) both B and C 6. Identify the atomic orbitals that up the C-H sigma bond in HCN. C H A) (p, p) B) (sp, sp 3 ) C) (sp, sp) D) (p, 1s) E) (sp, 1s) 7. In which molecule does the arrangement of valence electrons on the central atom have a linear geometry? ( hint: Draw the Lewis structures before deciding. ) A) HCN B) SO 2 C) N 2 O D) H 2 S E) OF 2 8. VSEPR theory predicts an identical shape for all of the following, except : (hint: draw the Lewis structures before deciding) A) H 2 CO B) BH 4 1- C) BH 3 D) CH 3 1+ E) All have the same geometry 9. The following electron configuration represents _______. A) the ground state of boron. B) an excited state of boron. C) the ground state of nitrogen. D) the ground state of carbon. E) an excited state of carbon. 10. In which of the following would you expect the central atom to be sp 2 hybridized (or approximately sp 2 hybridized)? ( hint: draw the Lewis structures before deciding ) A) AlCl 4 1- B) F 2 CO C) CO 2 D) CCl 4 E) All of these 1s 2s 2p x 2p y 2p z H 2 C N CH 3 x y z
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This note was uploaded on 12/22/2011 for the course CHEMISTRY 2210 taught by Professor Keller during the Spring '11 term at FIU.

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CHM2210F11EXIIV3 - NAME LAST FIRST Panther ID SECTION A.M P.M(Circle One FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry Biochemistry CHM

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