| 1. |
(15%) |
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What is the major function(用途) of thermodynamics(熱力學), chemical
kinetics(化學動力學) and quantum chemistry(量子化學)? |
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| 2. |
(10%) |
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Please choose two instruments(儀器) and describe(描述) the major
functions(功用) of FTIR(傅立葉紅外線光譜儀) and TGA(熱重量), TEM(穿透式電子顯微鏡), NMR(核磁共振)
for characterizing(鑑定) materials or compounds. |
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| 3. |
Briefly answer the following questions: |
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| (1) |
(4%) |
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Indicate the hybrid orbital set used by the central atom in each
of the following molecules and ions: (a)SiH4 (b) CH3+
(c) ICl2- (d) PF6- |
| (2) |
(14%) |
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Give the molecular geometries of molecules that have the following
electron domains on their central atoms: (a) four total electron
domains; (b) five total electron domains. (total electron domains
= bonding pairs + nonbonding pairs) |
| (3) |
(7%) |
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Draw possible Lewis structures of phosgene COCl2. Give
the formal charge on each atom. Which of these resonance forms is
likely to be most important? |
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| 4. |
(12%) |
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What mass of Ba(IO3)2 can be dissolved
in 300.0 mL of water at 25℃?
Note: Atomic mass: Ba = 137.327; I = 126.90447; O = 15.9994
Ksp (Ba(IO3)2) = 1.57 ×10-9 |
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| 5. |
(13%) |
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A solution containing 6.50 ×10-5 M KMnO4
has a transmittance (穿透度) of 0.311 in a 1.00-cm cell at 520 nm. Calculate
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| (a) |
the absorbance (吸收度) of the solution |
| (b) |
the molar absorptivity of KMnO4 |
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| 6. |
(10%) |
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| (1) |
Consider (A) F－ (B) Cl－ (C) CN－
, and (D) CH3－ . The correct order of basicity
(Strongest base last) is (a) D,C,B,A (b) D,B,A,C (c) B,A,C,D (d)
A,C,D,B |
| (2) |
How many different monochlorinated derivatives can be made from
3,3-diethylpentane? (a) 1 (b) 2 (c) 3 (d) 4 (e) 5 |
| (3) |
How many stereoisomers can exist for 2,3,4,5- tetrachloropentane? (a)
2 (b) 4 (c) 6 (d) 8 (e) more than 8 |
| (4) |
Of CH3CH2CH2CH2C≡CH
is added to a solution of CH3CH2MgBr, a gas
is evolved. What is it? (a)HBr (b) H2 (c) C2H6
(d) Br2 (e) C2H5Br |
| (5) |
Of sodium is added to propanol, a gas is evolved. What is it?
(a)C3H8 (b) H2 (c) C2H4
(d) C3H6 (e) CH4 |
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| 7. |
(15%) |
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| (1) |
Describe the effects of the following varicbles on SN2
and SN1 reactions: (a)Solvent (b)Leaving group (c)Attacking
nucleophile |
| (2) |
Predict and explain the products of the following reactions: |
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