02soln_C357_PPS_2_solutions_2007

02soln_C357_PPS_2_solutions_2007 - C357 PPS#2 Solutions 1...

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C357 PPS#2 Solutions Page 1 of 3 1) H H He He ! ! !" !" Hydrogen fills only the bonding MO, whereas Helium must use the antibonding MO in order to accommodate all of the electrons. Thus, H 2 is more stable than two H atoms, whereas He 2 doesn’t gain any stability over two He atoms and does not form. 2) Draw in 3D fashion the following compounds, showing all bonds and their orientation around the atom. H H H H H H H H H H CC H H O H H H C H H H Cl Cl Cl Cl H H H H O H C H H H Cl Cl Cl Cl Cl Cl H H H H H H H H H H H H H H H H H H
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P a g e 2 o f 3 3) Cl Cl Cl Cl Cl Br Cl Cl H O H H H H CH 3 H H Cl CH 3 H H H N H H H H H H H H CH 3 CH 3 H 3 C H 3 C Cl F Br I 4) Cl Cl Cl Cl Cl Br Cl Cl H O H H H H CH 3 H H Cl CH 3 H H H N H H H H H H H H CH 3 CH 3 H 3 C H 3 C Cl F Br I nonpolar nonpolar nonpolar nonpolar polar polar polar polar polar 5) H 3 C C O CH 3 H 3 C C N CH 3 H CC C Cl Cl Cl H C H H C H H H O H OC O carbons are sp 2 carbons are sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 3 sp 2 sp 2 sp 2 sp 2 sp 2 sp 2 sp 2 sp 2 sp sp sp sp 2 sp 2 sp 2 sp 2
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P a g e 3 o f 3 6) Circle the bonds in the compounds below that have free rotation possible around them. HC H H C H H H CC H H C O H 2 C CH 2 H 2 C C N CH 2 H OC O H O H Cl F Br
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This note was uploaded on 09/28/2008 for the course CHEM 3570 taught by Professor Ganem, b during the Fall '06 term at Cornell.

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02soln_C357_PPS_2_solutions_2007 - C357 PPS#2 Solutions 1...

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