recitation4

recitation4 - Recitation 4: Practice Exam 1 CH 235 February...

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Page 1 of 6 Recitation 4: Practice Exam 1 CH 235 February 3rd, 2011 Organic Chemistry I Exam 1 Directions : Closed book exam, no books, notes, and electronic devices are allowed. Show all your work if you wish to receive partial credit. Name (Print)_________________________________________ Signature___________________________________________ Student ID# (or the last 4 digits of SSN) _____________________________ TA’s name __________________________________________ Page Possible points Received points grader 2 30 3 22 4 50 5-6 48 Total 150
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Page 2 of 6 1. Draw the Lewis structures, line-bond structures (i.e. a two-electron covalent bond is indicated as a line drawn between atoms) and predict the molecular geometry and polarity. Note: molecular geometry only involves 3D arrangement of atoms, and non-bonding electrons are not included. (20 pts) Molecule Lewis structure Line-bond structure (indicate hybridization of each non-hydrogen atom) Molecular geometry Polar molecule? (Y/N) NH 3 BF 3 CO 2 CHCl 3 HCCCCH 2. Predict the direction of the following reaction. Also, please provide the definition of the equilibrium constant of this particular reaction along the indicated direction. (10) CC H H + CH 3 CH 2 O - : H + CH 3 CH 2 OH pKa = 25 pKa = 16
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recitation4 - Recitation 4: Practice Exam 1 CH 235 February...

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