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課程名稱︰普通化學乙
課程性質︰必修
課程教師︰林萬寅 教授
開課學院：工學院
開課系所︰土木工程學系
考試日期（年月日）︰2008/01/18
考試時限（分鐘）：10:20-12:10
考試範圍：Ch7-Ch12
是否需發放獎勵金：是，謝謝
試題 :
General Chemistry January 18,2008
1. For the third period elements(Na~Cl), answer the following questions. 10%
(A)Which metallic element has the largest first ionization energy?
(B)Which metallic element has the smallest second ionization energy?
(C)Which non-mentallic element(P, S, or Cl) has the largest atomic radius?
(D)Which elements form basic oxides?
(E)Which element forms an amphoteric oxide?
(F)Which elements contain two unpaired electrons for the ground state atom?
(G)Which element is diamagnetic?
(H)Which element has the smallest eletronegativity?
2. For the IF4¯ ion, answer the following questions. 12%
(A)What is the total number of valence electrons?
(B)Write its Lewis structure.
(C)Indicate its electron group geometry.
(D)Indicate the hybridization of the central atom.
(E)Draw its molecular geometry.
(F)Give the formal charges of I and F.
3. Choose among the following molecules that satisfy the property given in
each question:ClF3, SO3, PCl3, BCl3, XeF4, SF4, SiCl4, PCl5 16%
(A)Nonpolar molecules
(B)Central atom has non-zero formal charge in its most plausible Lewis stucture
(C)Central atom uses sp3d(註:3為上標) hybridization
(D)Contain resonance structures
(E)Planar molecular geometry
(F)Central atom violates the octet rule
4. Benzene(C6H6, Mw=78 g/mol, mp=5.5。C, Kf=5.1。C/m) and nitrobezene(C6H5NO2,
Mw=123 g/mol, mp=5.8。C, Kf=8.1。C/m) are completely miscible with each other
form ideal solutions. With there two liquids, it is possible to prepare two
different solutions having a freezing point of 0.0。C 12%
(A)What are the compositions(expressed in mole fraction)of these two solutions
(B)If the vapor pressure of benzene and nitrobenzene at 50。C are 360 and 40
mmHg, respectively, find the vapor composition(expressed in mole fraction)
at 50。C for the nitrobezene-rich solution in (A)
5. RbCl(s) crystallizes in a body-centered cubic structure(Cl¯ ion adopt a
simple cubic arrangement with Rb﹢ion in the center). The ionic radii for Rb﹢
and Cl¯ are 148 and 181 pm, respectively. Answer the following questions. 15%
(A)What is the coordination number of Rb﹢?
(B)Calculate the length of the unit cell.
(C)Estimate the destiny of RbCl(s).(Rb=85.5, Cl=35.5, NA=6.02×10^23)
(D)Estimate the percentage of empty space in a unit cell.
6. From the phase diagram of HgI2 below, answer the following questions. 15%
│
P│ │ │
│solidα│solidβ│ liquid
│ │ │
│ │D │E F ╱
│ C...│.......│............╱....G
│ │ │ ╱
│ │ │ ╱
│ │ │╱￣￣￣
│ │ ╱B (註:此折線原為弧線但畫不出來)
│ │╱￣￣
│ ╱A gas
│ ╱
│ ╱
└─────────────────────
T
(A)Give the composition of the system at A and B
(B)Describe the phase changers that occur when the system is heated from Tc to
TG at a constant pressre of Pc.
(C)Indicate the ranges of T&P for the sublimation ofβ-HgI2 to occur.
(D)Indicate the melting point, the boiling point, and the phase transition
point(α→β) for HgI2 at Pc.
(E)Indicate the vapor pressure curve for liquid HgI2 in the temperature range
TB-TF
7. Answer the following questions. 20%
(A)Explain the terms "critical point" and "supercritical fluids"
(B)Write the electron configuration, magnetic property and bond order for
O2﹢(註:正號上標 2下標)
(C)List the intermolecular forces commonly found in proteins.
(D)What is 'de Broglie's matter wave"? Find the wavelength associated with an
electron(m=9.11×10^-31 kg) moving at a speed of c/5.(c=3.0×10^8 m/s;
h=6.625×10^-34 Js)
考試規則：可代計算機、翻譯機、中英文作答皆可、可提早交卷
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