课程名称︰有机化学乙上 课程性质︰必修 课程教师︰罗礼强 开课学院： 开课系所︰ 考试日期（年月日）︰98/10/22 考试时限（分钟）：120 是否需发放奖励金：是，谢谢 （如未明确表示，则不予发放） 试题 : 1.Classify each of the following compounds.(4 points) a) b) c) d) O O H2 O ∥ ∥ ︱ ∥ CH3-C-N-CH3 CH3-C-OH CH3-C-C-C-H H3C-C≡C-CH3 ︱ ︱ H H2 2.Complete the Lewis structure for the following compounds and ions,and assign formal charge as appropriate. The connectivity of major atoms in each structure is given below the formula.(16points) a) O3 b)CH2N(CH3)2+ c)HC2- d)CH3OSO3- C O ︱ │ O-O-O C-N-C H-C-C C-O-S-O │ O 3.Sulfur dioxide(SO2) has a dipole moment(μ=1.63D);on the other hand ,carbon dioxide (CO2)has no dipole moment(μ=0D) . What is the geometry of SO2 predicted by VSEPR theory? Show the direction of the dipole moment of SO2 (5points) 4.Name the following groups;(a)-OH (b) C=O (c)-Br (d)-NH2 (e)-CH(CH3)CH2CH3 (f)-C6H5 (g)-CH2CH=CH2 (h)-CH2- (i) -CH(CH3)2 (18points) 5.Supply the curved arrows necessary for the following reactions and show all nonbonding electrons pairs . (6points) a) CH3OCH3+HI →CH3O(+)CH3 +I(-) H b)CH2=CH2 +HCl → CH2(+)CH3 +Cl(-) 6.The pKa of acetone(CH3COCH3)is 19.2:Draw the structure of the conjugate base of acetone and any other contribruting resonance forms, including all the nonbonding electron pairs(4 points) 7.Name the following compounds .(14points) 共七题，恕无法以ptt呈现 8.Briefly describe how you could experimentally determine the methylpropane is more stable than butane (5points) 9.Draw the bond-line formula for all the alcohols with molecular formula C5H12O and their names 10.(a)Draw the two possible chair conformations for methylcyclohexane (b)Which one is more stable(Hint:use Newman projections to explain your answer) (c)Suppose the free-energy difference between these two conformations is 7.6 kJ/mol at 25℃. What is the percentage of the major conformation in equilibrium.(16 points) --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.112.4.234