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國立屏東教育大學 96 學年度研究所碩士班入學考試
化學 試題
（應用化學暨生命科學系碩士班）
※請注意：1.本試題共四頁。
2.答案須寫在答案卷，否則不予計分。
一、選擇題 (每題 4 分，共 120 分)
1. Solutions of BaCl2(aq), Na2SO4(aq) and KNO3(aq) are mixed together. What compound is
likely to precipitate from the solution? （A）NaNO3 （B）Ba(NO3)2 （C）BaSO4 （D）
KCl （E）K2SO4
2. 5.02 g of an unknown gas is sealed in a 1.0 L flask at 37oC and 3.75 atm. Which one of the
following is most likely to be the unknown?（A）H2O（B）HBr（C）HCN（D）H2S（E）
C2H2 （Br=80, N=14, S=32,）
3. An electron in a certain atom is in the n = 2 quantum level. Which choice lists possible
values of both l and ml that it can have?
（A）l = 2. ml = 2.（B）l = 1. ml = 2.（C）l = 0. ml = ─1.
（D）l = 0. ml = 0.（E）l = 2. ml = 1.
4. The maximum number of electrons in a atom with the following set of quantum numbers is：
n=4
l=+3
ml = ─2
ms = + 1/2
（A）0 （B）1 （C）2 （D）6 （E）10
5. Which of the elements listed below has the following pattern for its first six ionization
energies. I1 = first ionization energy, I2 = second ionization energy, etc.
（A）Ca （B）Si （C）Al （D）Se（E）P
6. The Lewis structure for chlorate ion, ClO3─ should show ____ single bond(s), ____ double
bond(s), and ____ lone pair(s).
（A）2, 1, 10（B）3, 0, 9（C）2, 1, 8（D）3, 0, 10（E）2, 1, 9
7. Carbon–11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. Approximately what
fraction of the initial number of C –11 atoms in a sample will remain after 81 minutes?
（A）1/16（B）1/4（C）1/2（D）1/32（E）1/8
8. Which response includes all the molecules below that do not follow the octet rule？(1) H2S (2)
BCl3 (3) PH3 (4) SF4
（A）2,4 （B）2,3 （C）1,2 （D）3,4 （E）1,4
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9. 加熱碳酸氫鈉時可得到碳酸鈉：
2NaHCO3(s)  Na2CO3(s) + CO2(g) + H2O(g)
已知此反應之 ΔHo = 128.9 kJ ，ΔGo = 33.1 kJ at 25oC，請問在標準狀況下，當溫度達到
多少時，此反應可自發？
（A）0.4 K（B）3.9 K（C）321 K（D）401 K（E）525 K
10. 欲配製 pH 值為 4.00 ± 0.02.之醋酸－醋酸鈉緩衝溶液時，其 CH3COOH 對 CH3COONa
的莫耳比（molar ratio）之值應為若干？
（A）0.18 （B）0.84（C）1.19（D）5.50（E）0.10
11. 已知：
2SO3(g) → 2SO2(g) + O2(g)
2NO3(g) → 2NO2(g) + O2(g)
Kc = 2.3  10 ─ 7
Kc = 1.4  10 ─ 3
則下列反應之平衡常數（equilibrium constant）為何？
SO2(g) + NO3(g) → SO3(g) + NO2(g)
（A）78（B）1.3  10 ─ 2（C）1.6  10 ─ 4 （D）3.2  10 ─ 10（E）6.1  103
12. 在 ClO3─中，中央原子之混成軌域（hybridization）為何？
（A）sp（B）sp2 （C） sp3 （D） sp3d （E）sp3d2
13. 考慮[CoCl6]4 ─ 離子，下列敘述何者正確？
1. Co 的氧化數（oxidation number）為-4。
2. Co 的配位數（coordination number）為+6。
3.此離子為順磁性（paramagnetic）
4.此離子為低自旋錯離子（low-spin complex）。
（A）1, 2, 3, 4（B）1, 4（C）2, 3（D）1, 3 （E）3, 4
14. 試求已知有 0.0070％解離之 0.10 M HCN 溶液的 pH 值。
（A）1.0 （B）0.0007 （C）3.15 （D）5.15（E）7.00
15. 沸點為 102.5oC 之某非揮發性溶質的水溶液，其凝固點為何? 已知水的 Kf = 1.86oC/m ，
Kb = 0.52oC/m.
（A）-8.94oC （B）-366oC （C）-0.99oC （D）0.99oC （E）8.94oC
16. 在 SF6 中，F─S─F 的鍵角(bond angles)為何？
（A）90 o（B）109.5 o（C）120 o（D）180 o（E）90 o and 180o
17. Which is the correct ground-state electron configuration for
(A) [Ar] 4s13d10
63
29
Cu ?
(B) [Ar] 4s23d10 (C) [Ar] 4s23d9 (D) [Ar] 4s23d10 (E) [Kr] 5s13d10.
18. The process of adding electrons one by one to atomic orbitals beginning with the lowest
energy is described by:
(A) the Aufbau Principle. (B) Hund's Rule. (C) the de Broglie Relation.
(D) the Pauli Exclusion Principle (E) Coulomb's Law.
19. The carbon atom in CH2Cl2 has what hybridization?
(A) sp
(B) sp2
(C) sp3
(D) sp4
(E) they are not hybridized
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20. Which of the following cannot be a correct Lewis structure?
(A)
(B)
(C)
(D)
(E) all are correct
21. Which of the following has the highest pKa?
(A) HI
(B) NH3
(C) HNO3
(D) CH3COOH
(E) H2SO4
22. Carbon dioxide is an essential greenhouse gas that insulates the planet and maintains a surface
temperature that allows life to flourish. Human activities have resulted in a dramatic increase
in the greenhouse gases in the atmosphere. Which of the following reactions produce the most
carbon dioxide per mole of carbon-containing starting material? (Note that these equations
are not balanced.).
C8H18 + O2
(A)
CH4 + O2
(B)
CO2 + H2O
major component
of gasoline
CO2 + H2O
major component
of natural gas
C12H22O11+ O2
CO2 + H2O
sugar
(C)
(D) All produce the same amount of carbon dioxide.
(E) None of these reactions produce carbon dioxide.
23. Chemists have determined that chlorofluorocarbons are contributing to destruction of the
protective ozone layer. Upon irradiation of chlorofluorcarbons, chlorine radicals are produced
and react with the ozone via the chemical process shown below. Which of the following
statement(s) are true based upon these equations?
(A) Termination steps in the equations above are contributing to ozone depletion.
(B) A single chlorine radical is capable of destroying many molecules of ozone since it is
regenerated.
(C) Chlorine radicals are the result of a heterolytic cleavage of the C-Cl bond of the
chlorofluorocarbon.
(D) A, B and C are correct.
(E) B and C are correct.
24. Predict the geometries of PCl5 using the VSEPR method.
(A) Linear (B) Trigonal planar (C) Tetrahedral (D) Trigonal dipyramidal
(E) Octahedral
25. What is the pH of the buffer system containing 1.0M CH3COOH and 1.0M CH3COONa after
the addition of 0.10 mole of gaseous HCl to 1.0 L of the solution？ (The Ka of CH3COOH is
1.8 x 10-5.)
(A) 2.66 (B) 3.66 (C) 4.66 (D) 5.66 (E) 6.66
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26. The solubility of calcium sulfate (CaSO4) is found to be 0.67 g/L. What is the value of Ksp
for calcium sulfate.
(A) 1.2 x 10-5 (B) 2.4 x 10-5 (C) 1.2 x 10-6 (D) 2.4 x 10-6 (E) 1.2 x 10-7
27. The reaction of nitric oxide with hydrogen at 1280℃ is
2NO(g) +2H2(g) → N2 (g) + 2H20(g).
From the following data colleted at this temperature, determine the rate low
Experiment [ NO]( M ) [ H 2 ]( M ) InitialRat e ( M / s )
1
5.0  10-3
2.0  10-3
1.3  10-5
2
10.0  10-3
2.0  10-3
5.0  10-5
3
10.0  10-3
4.0  10-3
10.0  10-5
(A) rate = k[NO][ H2] (B) rate = k[NO]2[ H2] (C) rate = k[NO][ H2]2 (D) rate =
k[NO]2[ H2]2 (E) None of the above is true.
28. 1kg of aluminum at 300℃ was thrown into 1kg of water at 0℃. What is the final
temperature of this combined system? (The specific heat of aluminum is 0.9 J/g. ℃.)
(A) 53.1℃ (B) 60.2℃ (C) 72.3℃ (D) 80.5℃ (E) 90.6℃
29. Arrange the following atoms in order of increasing atomic radius: P, Si, O, S
(A) P < Si < O < S (B) O < P < Si < S (C) S < P < Si < O (D) O < Si < P < S (E) O < S
< P < Si
30. If 1.7g of AgNO3 was reacted with 1.17 g of NaCl, and 0.715 g of AgCl was obtained, what is
the percent yield of AgCl ?
(A) 12.5% (B) 25% (C) 50% (D) 75%
(E) 100%
註：原子量
N=14
O=16
S=32
Ca=40
Ag=108
二、問答題 (每題 10 分，共 30 分)
1. Oxalic acid, HOOC — COOH, is the simplest acid that has two carboxylic acid groups. Write
an equation and show the structure of a polyester that might be made from oxalic acid and
ethylene glycol, HO─CH2—CH2—OH.
2. If you combine diethyl ether (CH3CH2OCH2CH3) with boron trifloride, what will the resulting
compound look like?
3. 氧與硫為同族元素，試解釋為何 CO2 為非極性分子，而 OCS 為極性分子。
第 4 頁，共 4 頁