※ [本文转录自 NTU-Exam 看板] 作者: sa033766 (奇泓) 看板: NTU-Exam 标题: [试题] 94上 杨美惠 普通化学丙 期中考题 时间: Sat Nov 19 15:30:40 2005 课程名称︰普通化学丙 课程性质︰必修 课程教师︰杨美惠 开课系所︰兽医 植微 考试时间︰94.11.09 试题 : １．Multiple Choice (38%) (1)A closed system differs from an isolated systems in that (A)the closed system exchanges matter with its surroundings and the isolated system does not. (B)the closed system exchanges energy with its surroundings and the isolated system does not. (C)the closed system exchanges booth matter and energy with its surroundings and the isolated system does not. (D)the closed system exchanges neither matter nor energy with its surround- ings. (E)the isolated system exchanges energy with its surroundings and the closed system does not. (2)Which of the following compounds would most likely not be found in gasoline? (A) C5H12 (B) C7H8 (C) C6H12O6 (D) C6H4 (E)C2H6O (3)What is the difference between extensive and intensive properties? (A)Extensive properties depend on the quantity of matter, while intensive properties do not. (B)Extensive properties occur outside a system, while intensive properties occur inside. (C)Extensive properties are state functions, while intensive properties are not. (D)Extensive properties include color and smell, while intensive properties include enthalpy and mass. (E)Extensive properties depend on the kinetic energy of a system, while intensive properties depend on the potential energy. (4)Which one of the following association of a scientist and a discovery is incorrect? (A)Albert Einstein --- explained photoelectric effect (B)Niels Bohr --- model of hydrogen (C)E. Rutherford --- nuclear atoms (D)Max Planck --- quantized energy (E)R. Millikan --- mass charge ratio (5)Which one of the following types of electromagnetic radiation would have the longest wavelength? (A) x-rays (B) UV (C) visible (D) IR (E) microwaves (6)In an experiment searching for the photoelectric effect, an incident beam of green light produced no ejected electrons from a metal. In order to eject electrons, the experimenter should (A)increase the brightness of the light. (B)try blue light. (C)try yellow light. (D)give up on that particular metal. (E)decrease the brightness of the light. (7)Which of the following is not a true statement concerning the energy of orbitals? (A)In the hydrogen atom, all subshells of a principle shell are at thhe same energy level. (B)Orbital energies are higher in multielectron atoms than in the hydrogen atom. (C)In a multielectron atoms, the various subshells of a principal shell are at different energy levels. (D)All orbitals within a subshell of a multieletron atom are at the same energy level. (E)In high numbered principal shells of a multieletron atom, some subshells of different principal shells have nearly identical energies. (8)How many of the elements in the second row of the Periodic Table are para- magnetic in atomic form? (A) 3 (B) 4 (C) 5 (D) 6 (E) 7 (9)Which of the following sets of elements is the incorrect order of increasing atomic redius (smallest one first, etc.)? (A) P,Si,Al (B) Cl,Br,I (C) S,As,Sn (D) Se,As,Sb (E)I,Se,S (10)Rank the elements C,O,Na,Al in order of decreasing ionization energy (largest first, etc.). (A) C > O > Na > Al (B) O > Na > C > Al (C) O > C > Al > Na (D) Al > Na > O > C (E) Na > Al > C > O (11)The eletron affinity for an oxygen atom is negative. What statement is probably true regarding the second eletron affinity for oxygen, i.e., the eletron affinity for O¯ (A)approximately twice the value for an oxygen atom (B)much larger and negative (C)positive (D)approximately five times the value for an oxygen atom (E)impossible to predict (12)In which atom do the outermost electrons experience the weakest effective nuclear charge? (A) N (B) C (C) O (D) F (E) Be (13)What is the major factor driving the formation of NaBr(s) from Na(s) and Br2(g)? (A)The attraction of a single positive Na ion for a single negative Br ion. (B)The low ionization energy of the sodium atom. (C)The high electron affinity of bromone atoms. (D)The favorable lattice energy for NaBr. (E)The low heat of sublimation for sodium atoms. (14)Which order is correct for increasing polarity (least polar first)? [A : S-Cl ; B : Si-Cl ; C : P-Cl ; D : Si-Si] (A) A < B < C < D (B) C < D < A < B (C) C < A < D < B (D) D < C < B < A (E) D < A < C < B (15)Which is the best Lewis structure for COS? (Formal charges are not shown.) .. .. .. .. .. .. .. .. .. .. (A) Ｓ﹦Ｃ﹦Ｏ (B) Ｃ﹦Ｏ﹦Ｓ (C) Ｃ﹦Ｓ﹦Ｏ (D) Ｓ≡Ｃ﹣Ｏ (E) Ｓ﹣Ｃ≡Ｏ .. .. .. .. .. .. .. H :O: \.. ∥ (16)Which of the following is a suitable resonance structure for: Ｃ－Ｃ / \ H H .. .. .. H :O: H :Ｏ: H O: H :Ｏ: H :Ｏ: \.. / \ / \ ∥ \ ∥ \ / (A) Ｃ﹦Ｃ (B) Ｃ－Ｃ (C) Ｃ－Ｃ (D) Ｃ－Ｃ (E) Ｃ﹦Ｃ / \ / \ /.. \ / \ / \ H H H H H H H H H H (17)According to VSEPR theory, the shape of ICl4¯is described as (A) tetrahedral (B) square plannar (C) square pyramidal (D) octahedral (E) trigonal bipyramidal (18)The hybird orbitals uesd by Xe in XeF4 are (A) sp (B) sp2 (C) sp3 (D) sp3d (E) sp3d2 (19)When two atomic orbitals (AO) are combined to form molecular orbitals (MO), which of the following descriptions of the energy of the resulting molecular orbital is the most accurate? (A)The MOs are the same energy as the AO. (B)The MOs are of higher energy than the AO. (C)The MOs are of lower energy than the AO. (D)One MO is higher and one MO is lower than the AO. (E)none of these. ２．Use the following data to determine the lattice energy of MgF2(s): enthalpy of sublimation of magnesium, +146 KJ/mol; I1 for Mg, +738 KJ/mol; I2 for Mg, +1451 KJ/mol; bond-dissociation energy of F2(g), +159 KJ/mol F2; eletron affinity of F, -328 KJ/mol F; enthalpy of formation of MgF2(s), -1124 KJ/mol.(20%) ３．Give examples and explain the difference between the following pairs:(50%) 1.accuracy vs. precision 2.isomer vs. isotope 3.molarity (M) vs. molality (m) 4.molecular masses vs. formular masses 5.manometer vs.barometer 6.diffusion vs.effusion 7.the ideal gas law vs. Van der Walls equation 8.standard state vs. standard condition 9.the wave nature vs. the particle nature 10.valence bond theory vs.molecular orbital theory -- 参考解答: １．BCAEE BBDEC CEDEA EBED ２．p.346 Ex 9-3 ３．p.27／p.64／p.115／p.114／p.205／p.206／p.205／p.249／p.291／p.426 参考用书:General Chemistry (4th edition) John W.Hill／Ralph H.Petrucci／Terry W.McCreary／Scott S.Perry Pearson Education International http://0rz.net/aa0QT --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.112.240.240 -- WorldCollege 留学 ◎各国大学资讯 Boston 都市 ◎波城资讯 --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 218.160.125.117