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1 Organic Chemistry 261(270, 271) Midterm-I Examination September 29, 2008 Name (print) -----------------------ID No. -------------------------- Time: 50 minutes Total number of pages: 6 Answer all questions in the space provided. Question I. (15.0) II. (14.0) III. (14.0) IV. (15.0) V. (10.0) Total (68.0) Percentage Mark GOOD LUCK 2 (9.0) 1. a) Write a Lewis structure for each of the following compounds showing any unshared electron pairs. b) Calculate the formal charge on each atom other than hydrogen. Be sure to show your calculations. a) CH3OH2 EC(c) = 1/2(8) = 4 FC(c) = 4- 4 = 0 H H H C O H H EC (O) = 1/2 (6) + 2 = 5 FC (O) = 6-5 = +1 b) (CH3)3CO H C H H H C C O HH C H c) (CH3)2O-BF3 H HH C F H H C O B F…show more content…
0.90765 90 91 164.93032 167.259 168.93421 99 100 101 U Np Pu Am Cm Bk Cf No Lr 232.0381 231.03588 238.02891 [237.0482] [244.0642] [243.0614] [247.0704] [247.0703] [251.0796] [252.0830] [257.0951] [258.0984] [259.1010]
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