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中原大學 98 學年度碩專班入學考試
3 月 7 日 09:00-10:30 化學系
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科目： 綜合化學
（共 2 頁第
□可使用計算機，惟僅限不具可程式及多重記憶者
1. Which molecule is paramagnetic (順磁性)
(A) O2 (B) N2 (C) F2
(D) Cl2
頁）
5不可使用計算機
(5%)
2. For a real gas (or van der Waals gas), we use the formula: (P + a)⋅(V − b) = nRT to
describe. What is the reason that the b value in this formula is a positive value?
(5%)
(A) real gas has volume (B) real gas has weight (C) real gas exerts pressure
(D) real gas molecules attract with each other
3. Which quantum state has non-zero energy in its ground state level:
(5%)
(A) translational energy level (B) rotational energy level (C) vibrational
ehergy level (D) kinetic energy level
4. What is the H−N−H bond angle of an NH3 molecule?
(A) 120°
(B) 109°28”
(C) 107.3°
(D) 60°
(5%)
5. Arrange the energy order of the following spectroscopies from higher transition
energy to lower transition energy: UV, X-ray, MASS, NMR, IR spectroscopy
(5%)
6. Write each answer with the correct number of significant digits.
A. 12.3 – 1.63 =
B. 4.34 x 9.2 =
7. Convert the following binary numbers to base 10 numbers:
A. 101 =
B. 1010 =
(5%)
(5%)
8. Which of the following pairs of solutions will give a precipitate when mixed?
(5%)
A) AgNO3(aq) and LiClO4(aq)
B) Pb(NO3)2(aq) and KI(aq)
C) K2SO4(aq) and Cu(NO3)2(aq)
D) NaCH3COO(aq) and CaCl2(aq)
E)
Ca(CH3COO)2(aq) and NH4Cl(aq)
9. A centiliter and a microliter are (5%)
A)
B)
C)
D)
E)
10–2 L and 10–6 L, respectively.
10–2 L and 10–9 L, respectively.
10–1 L and 10–6 L, respectively.
10–1 L and 10–9 L, respectively.
10–6 L and 10–9 L, respectively.
10. The weak HA has pKa = 4.00, what is it’s Ka?
11. Define the following terms:
(5%)
(20%)
(a) HOMO and LUMO (b) semiconductor (c) Lewis acid and Lewis base (d) van der
Waals radii
12. Draw the five d atomic orbitals with correct direction.
(5%)
13. Draw structures for the expected products from each of the following reactions:
(15%)
(a) CH3CH2CH=CH2
+
Cl2/H2O
a) Mg/ether
(b) CH3-CH2-CH(Br)-CH3
b) H2O
(c) (C2H5)3N + H2O2
(d) C6H5COOH + CH2N2
(e)
Br2/FeBr3
COO
14. There are five resonance structures of phenanthrene, one of which is shown. Draw
the other four and predict which of its carbon-carbon bonds is shortest.
phenanthrene
(10%)