110_Sp10_ex2_A

110_Sp10_ex2_A - CHEMISTRY 110 EXAM 2 March 1, 2010 Form A

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Unformatted text preview: CHEMISTRY 110 EXAM 2 March 1, 2010 Form A ------------------------------------------------------------------------------------------------------------ 1. How many sigma and pi bonds are present in the following molecule? N O O N N H H H H A. 16 sigma bonds, 3 pi bonds B. 16 sigma bonds, 6 pi bonds C. 15 sigma bonds, 3 pi bonds D. 12 sigma bonds, 3 pi bonds E. 20 sigma bonds, 3 pi bonds ------------------------------------------------------------------------------------------------------------ 2. Which of the following species exhibits delocalized bonding? A. COCl 2 B. N 2 F 4 C. N 2 H 2 D. CO 3 2- E. CH 3 CH 2 CH 3------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------ 3. Which of the following statements is FALSE? A. A sigma bond results from head-on overlap of orbitals, resulting in electron density along the inter-nuclear axis. B. A pi bond can be formed by overlap of an s orbital and a p orbital. C. A double bond consists of both a sigma bond and a pi bond between the same two atoms. D. A sigma bond is a stronger interaction than a pi bond. E. A pi bond results from the sideways overlap of orbitals, resulting in electron density above and below the inter-nuclear axis. ------------------------------------------------------------------------------------------------------------ 4. Which of the compounds below would react with bromine (Br 2 ) at room temperature? A. n-pentane B. toluene C. iso-pentane D. cyclopentane E. 2-hexene------------------------------------------------------------------------------------------------------------ 5. Which intermolecular force is responsible for the fact that ice is less dense than liquid water? A. London dispersion forces B. dipole-dipole forces C. ion-dipole forces D. hydrogen bonding E. ionic bonding ------------------------------------------------------------------------------------------------------------ 3. Which of the following statements is FALSE? A. A sigma bond results from head-on overlap of orbitals, resulting in electron density along the inter-nuclear axis. B. A pi bond can be formed by overlap of an s orbital and a p orbital. C. A double bond consists of both a sigma bond and a pi bond between the same two atoms. D. A sigma bond is a stronger interaction than a pi bond. E. A pi bond results from the sideways overlap of orbitals, resulting in electron density above and below the inter-nuclear axis. ------------------------------------------------------------------------------------------------------------ 4. Which of the compounds below would react with bromine (Br 2 ) at room temperature?...
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This note was uploaded on 07/16/2011 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Spring '08 term at Penn State.

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110_Sp10_ex2_A - CHEMISTRY 110 EXAM 2 March 1, 2010 Form A

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