Re: [轉錄][試題] 94下佘瑞琳普通化學甲下期中考

看板NTUAC95作者waymon (把握機會往前衝)時間19年前 (2006/11/16 23:04)推噓1(1推 0噓 0→)

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: 試題 : : : C=3.00×10^8m/s;h=6.63×10^-34J/s; Gas constant: R=8.314J/mol.K : =0.082L.atm/mol.K : : I. Multiple Choices (36%) : : 1.The vibrational energy of molecules often require photons in the region of : (a)infrared (b)microwaves (c)radio frequency (d)visible light : 2.Which form of electromagnetic radiation has the highest energy? : (a)infrared (b)microwaves (c)radio frequency (d)visible light : 3.Which of the following orbital designations are incorrect? : (a)1p (b)2d (c)6s (d)4f : 4.How many electrons in an atom can have the quantum numbers n=3, l=1? : (a)3 (b)1 (c)6 (d)2 : 5.Which of the following combinations of quantum numbers is not allowed? : (a)(1,1,1,+1/2) (b)(3,2,0,-1/2) (c)(4,3,-3,+1) (d)(3,1,-1,-1/2) : 6.The electron configurations for Fe^2+ is : (a)[Ar]4s^2 3d^6 (b)[Ar]4s^0 3d^5 (c)[Ar]4s^2 3d^4 (d)[Ar]4s^0 3d^6 : 7.Which of the following give a correct trend in size? : (a)Al<Si<P<Cl (b)Be<Mg<Ca<Sr (c)I<Br<Cl<F (d)Na^+<MG^2+<Al^3+<Si^4+ : 8.Place the elements O, F, and Cl in order of increasing first ionization : energy : (a)Cl, O, F (b)O, F, Cl (c)F, O, Cl (d)Cl, F, O : 9.Which of the following molecules has a dipole moment? : (a)CH2Cl2 (b)trans-C2H2F2 (c)SO3 (d)BrF3 : 10.Which of the following molecules is linear? : (a)I3^- (b)CO2 (c)O3 (d)H2S : 11.Which of the following has the central atom that is dsp^3 hybridized? : (a)SO4^2- (b)SCl4 (c)NH4^+ (d)SF6 : 12.Which of the following orbital diagrams are possible for a ground-state : electron configuration? : (a)〔↑↓〕　〔↑↓〕　〔↑　〕〔　↓〕〔↑　〕 : 1s 2s 2p : (b)〔↑↓〕　〔↑↓〕　〔↑　〕〔↑　〕〔　　〕 : 1s 2s 2p : (c)〔↑↓〕　〔↑　〕　〔↑　〕〔↑　〕〔↑　〕 : 1s 2s 2p : (d)〔↑↓〕　〔↑↓〕　〔↑↓〕〔↑　〕〔↑　〕 : 1s 2s 2p : 13.Which quantum number defines the orientation of an orbital? : (a)spin (b)magnetic (c)pricipal (d)azimuthal(angular momentum) : 14.Which of the following illustration is correct? : (a)allotropes: graphite and diamond (b)isotopes: O2 and O3 : (c)isoelectronics: Fe^2+ and Cu^2+ (d)noble gas: F2 and Cl2 : According to the spectrum, answer the following questions: : 15.This is a (a)IR (b)UV-vis (c)H-NMR (d)Mass spectrum. : 16.There are (a)one (b)two (c)three (d)four sets of equivalent hydrogens. : 17.The molecule might be (a)CH3-O-CH3 (b)CH3CH2OH (c)CH3CH2Cl (d)(CH3)4Si : 18.Which of the following is the property of nanodiamond? : (a)good thermoconductivity (b)biocompatible (c)transparent (d)composed of : carbon atoms : : II. Problems: (64%) : 1.It take 208.4 kJ of energy to remove one mole of electrons from the atoms on : the surface of rubidium metal. If rubidium metal is irradiated with 254 nm : light, what is the maximum kinetic energy the released electrons can have? : (6%, 12.29) : 2.Using the following information, write each balanced thermochemical : equations, and calculate the lattice enthalpy of AgF(s) (10%) : enthalpy of formation of Ag(g) +284 kJ/mol : ionization energy of Ag(g) +731 kJ/mol : enthalpy of formation of F(g) + 79 kJ/mol : enthalpy of formation of AgF(s) -205 kJ/mol : electron affinity of F(g) -328 kJ/mol : 3.Using the average bond energy in Table 13.6, estimate the enthalpy change : for the reaction: : HCN(g) + 2H2(g) →CH3NH2(g) (5%, 13.31C) : 4.For the molecule SO2, (a)draw the Lewis structures (show any resonance : structures), (b)assign the formal charges, (c)specify the orbitals used by : the S atom, (d)indicate the bond angles, (e)predict the geometry of the : molecule, and (f)is this molecule polar or nonpolar? (13%, p639) : 5.Draw the Lewis structure of acetic acid, CH3COOH. (b)Predict the bond angles : and the hybride orbitals used by the central atoms: C and O. (c)How many σ : and π bonds are there in the molecule? (10%) : 6.Draw the Molecular Orbital energy-level diagrams for CO, CO^+, and CO^2+, : predict the bond orders, magnetism(paramagnetic or diamagnetic) and the : relative bond lengths, bond energies for these three species. Using MO of CO : indicate HOMO(Highest Occupied MO) and LUMO(Lowest Unoccupied MO). : (20%, 12.35) : : -- : Ana tupa tu, uka mita mahtu sinadan.Asa kata tu malinaskal, aupa aizag a buan. : Ana tupa tu, uka mita mahtu kanadan.Asa kata tu malisvala, aupa aizag a bunun. : I sia mita tu is-ag, maza mastan kaisal bun. ▁▂▃▅▄▃▁. . : Adu aiza sipu-gulun mita,i sa mita tu is-ag. . ● . : Mais sadu kata buan, maza mita iliskinan. . . ▂▃▅▆▄▃▂▁ : Mailan-tagus nalitia tu sin-hasam. Adu aldikusun nin ta. =Biung-Moonlight= : : ※ 發信站: 批踢踢實業坊(ptt.cc) : ◆ From: 203.70.94.58 : → xenoanubis:這個感覺比較像我們會考的... 11/16 22:00 : 推 FireHell:最後一題是什麼鳥阿...看無...@@ 11/16 22:31 最後一題看不懂只有兩種可能不是你沒唸書就是老師還沒交 Molecular Orbital 這章節一定會說的如果沒有單獨看CO 你就找N2的Molecular Orbital來畫不過能量高低會有一點差選擇題都很簡單啦 (這是你們考試範圍嗎？) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.184.133.27

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11/17 01:23, , 1^F

11/17 01:23, 1^F

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