Name:___________________ Student number:___________________
I. 計算問答題：（必須寫出計算過程或結構式必須畫清楚才給分）
1)
Cadmium sulfide (CdS) is used in some semiconductor applications. Calculate
the value of the solubility product (Ksp) for CdS given the following standard
reduction potential.
(5 分)
2o
CdS + 2e  Cd + S
E = -1.21 V
Cd2+ + 2e-  Cd
Eo = -0.402 V
Ans:
CdS + 2e-  Cd + S2-
Eo = -1.21 V
Cd  Cd2+ + 2e-
Eo = 0.402 V
CdS(s)  Cd2+(aq) + S2-(aq)
Eo = -0.81 V
Log Ksp = nEo/0.0591 = 2 x (-0.81)/0.0591 = -27.41
∴ Ksp = 10-27.41 = 3.9 x 10-28
2)
Draw the structures of each of the following.
(a) cis-dichloroethylenediamineplatinum(II)
H2C
NH2
(8 分)
Cl
Pt
C
H2
NH2
Cl
(b) trans-dichlorobis(ethylenediamine)cobalt(II)
Cl
NH2
NH2
H2C
CH2
C
H2
Co
NH2
O
NH2
CH2
O
O
Cl
O
CN
Fe
O
(c) cis-dicyanobis(oxalato)ferrate(III)
CN
O
O
O
2-
Cl
Cl
(d) tetrachlorocobaltate(II)
Co
Cl
Cl
3)
The CrF64- ion is known to have four unpaired electrons. Does the F- ligand
produce a strong or a weak field? Explain.
(4 分)
Ans:
small
CrF6  Cr (d )
F- must be a weak field ligand to produce high-spin configuration.
4-
4)
2+
4
Amino acids can act as ligand toward transition metal ions. The simplest amino acid
is glycine (NH2CH2CO2H). Draw a structure of the glycinate anion ((NH2CH2CO2-),
which can act as a bidentate ligand (N-donor and O-donor). Draw the structural
isomers of the square planar complex Cu(NH2CH2CO2)2.
(2+4分)
Ans:
N
O
H2
C
O
Cu
Cu
H2N
OH
O
O
N
N
O
N
O
O
O
5) The Amoco Chemical company has successfully raced a car with a plastic engine.
Many of the engine parts, including piston skirts, connecting rods, and valve-train
components, were made of a polymer called Torlon. What monomers are used to
make this polymer? (5分)
O
O
N
N
H
O
Ans:
O
O
HO
OH
OH
O
H2N
NH2
n
O
6) Draw the structures for each of the following. (5x2分)
H2
C
(a) trans-2-methyl-3-octene
H2
C
H3C
C
H2
H
C
H
C
C
H
CH3
(b) 4-methyl-1-pentyne
CH3
C
H
H3C
CH
C
H2
(c) 2,3,3-trimethyl-1-hexene
H2
C
H3C
CH3
C
H2 CH
3
CH2
CH3
(d) p-di-tert-butylbenzene
CH3
CH3
CH3
H3C
CH3
CH3
(e) cis-2,3-dichloro-2-pentene
H2
C
H3C
Cl
Cl
7) Name each of the following compounds. (4分)
(a)
H3C
CH2CH3
Ans: 1-ethyl-3-methylcyclopentene
CH3
(b)
H3C
CH3
CH3
Ans: 2,5-dimethyl-trans-3-heptene
CH3
CH3
8) How many chiral carbon atoms does the following steroids have? Please use
asterisks to indicate the chiral carbon atoms. (5分)
H3C
CH3
CH3
CH3
CH3
HO
9) Draw the structure of a tripeptide with the sequence of cys-glu-his. (5分)
O
O
O
O
HS
N
HO
OH
OH
OH
NH2
N
NH2
Cysteine
Glutamic acid
Histidine
HO
O
O
Ans:
O
N
H
HS
N
H
NH2
N
O
HO
10) Complete the following reactions. (4分)
Cl
(a)
+ Cl2
FeCl3
+ HCl
NO 2
(b)
+ HNO3
NH2
H2SO4
+H 2O
N
II.單選題（每題兩分共60分）
1) Which of the following is true for the cell shown here?
Zn(s)  Zn2+(aq)  Cr3+(aq)  Cr(s)
a)
b)
c)
d)
e)
ANS:
The electrons flow from the cathode to the anode.
The electrons flow from the zinc to the chromium.
The electrons flow from the chromium to the zinc.
The chromium is oxidized.
The zinc is reduced.
b)
The electrons flow from the zinc to the chromium.
2) When the equation for the following reaction in basic solution is balanced, what
is the sum of the coefficients?
MnO4– (aq) + CN–(aq)  MnO2(s) + CNO–(aq)
a)
ANS:
13 b)
a)
8 c)
10
d) 20
e)
11
13
3) Which metal, Al or Ni could reduce Zn2+ to Zn(s) if placed in a Zn2+ (aq) solution?
Zn2+ + 2e-  Zn
E° = -0.76 V
3+
Al + 3e  Al
E° = -1.66 V
2+
Ni + 2e  Ni
E° = -0.23 V
a) Al
b) Ni
c) Both Al and Ni would work.
d) Neither Al nor Ni would work.
e) Cannot be determined.
ANS:
4-6)
a)
Al
Consider the galvanic cell shown below (the contents of each half-cell are
written beneath each compartment):
Pt
Cr
0.50 M Br2
0.20 M Cr3+
0.10 M Br–
The standard reduction potentials are as follows:
Cr3+ + 3e–  Cr(s)
E° = –0.73 V
Br2(aq) + 2e–  2Br–
E° = +1.09 V
4) What is E° for this cell?
a) 1.82 V b) 0.36 V c)
ANS: a) 1.82 V
4.75 V d)
1.79 V
e)
4.40 V
5) What is the value of E for this cell at 25°C?
a) 2.21 V b) 1.76 V c)
ANS: d) 1.88 V
2.12 V d)
1.88 V e)
0.59 V
6) Which of the following statements about this cell is false?
a)
b)
c)
d)
e)
ANS:
This is a galvanic cell.
Electrons flow from the Pt electrode to the Cr electrode.
Reduction occurs at the Pt electrode.
The cell is not at standard conditions.
To complete the circuit, cations migrate into the left half-cell and anions
migrate into the right half-cell from the salt bridge.
b)
Electrons flow from the Pt electrode to the Cr electrode.
7) Choose the correct statement given the following information:
Fe3+(aq) + e–  Fe2+(aq) E° = 0.77 volt
Fe(CN)63– + e–  Fe(CN)64– E° = 0.36 volt
a)
b)
c)
d)
e)
ANS:
Fe2+(aq) is more likely to be oxidized than Fe2+ complexed to CN–.
Fe3+(aq) is more likely to be reduced than Fe3+ complexed to CN–.
Both a and b are true.
Complexation of Fe ions with CN– has no effect on their tendencies to
become oxidized or reduced.
None of these is true.
b)
Fe3+(aq) is more likely to be reduced than Fe3+ complexed to CN–.
8) If a constant current of 5.0 amperes is passed through a cell containing Cr3+ for
1.0 hour, how many grams of Cr will plate out onto the cathode? (The atomic
mass of Cr is 51.996.)
a)
ANS:
0.054 g
c)
b)
9.7 g c) 3.2 g
d) 1.5 g e) 93 g
3.2 g
9) What are the oxidation numbers of the central metal atom in the following
coordination compounds? K3[Fe(CN)6], [Cr(NH3)4Br2]Br, [Ni(H2O)6]Cl2,
Na2[TaF7] are
a)
ANS:
3, 3, 3, 5 b)
e)
3, 3, 2, 7 c)
–3, 3, 2, 5
d) –3, 1, 2, 5
e) 3, 3, 2, 5
3, 3, 2, 5
10) The coordination theory was proposed by:
a) Bailar b) Jorgensen
ANS:
d)
c) Blomstrand d)
Werner
Werner e)
none of these
11)
Ethylenediamine (en) is a bidentate ligand. What is the coordination number
of cobalt in [Co(en)2Cl2]Cl?
a)
four b)
ANS:
e)
five c) seven d)
eight e) six
six
12) Which of the following ligands might give linkage isomers?
a)
NO2– b) SCN– c) H2NCH2CH2NH2 d)
ANS:
d)
a and b e)
a, b, and c
a and b
13) Give the number of geometrical isomers for the octahedral compound
[MA2B2C2], where A, B, and C represent ligands.
a)
1
ANS:
14)
a)
b) 2
d)
c)
3 d)
5
e)
none of these
5
What is the electron configuration of the Ni(II) ion?
[Ar]4s23d6 b)
ANS:
d)
[Ar]4s13d7 c) [Ar]4s23d8 d)[Ar] 3d8 e)
[Ar]
none of these
3d8
15) Which of the following is paramagnetic?
a)
Zn(H2O)62+
d)
Mn(CN)62– (strong field) e) none of these
ANS:
d)
b) Co(NH3)63+ (strong field) c) Cu(CN)32–
Mn(CN)62– (strong field)
16) The complex ion Ni(NH3)62+ (two unpaired electrons) is classified as:
a)
weak field b) strong field c)
ANS:
c)
no way to tell
no way to tell
17) How many unpaired electrons are there in the tetrahedral complex ion [FeCl4]–?
a)
ANS:
1
b) 2
e)
c)
3 d)
4
e)
5
5
18) The spectrochemical series is
I– < Br– < Cl– < F– < OH– < H2O < NH3 < en < NO2– < CN–
Which of the following complexes will absorb visible radiation of the highest
energy (shortest wavelength)?
a)
d)
[Co(H2O)6]3+ b)
[Co(en)3]3+
e)
ANS:
19)
[Co(I)6]3– c) [Co(OH)6]3–
[Co(NH3)6]3+
[Co(en)3]3+
d)
Which of the following complexes can exhibit optical isomerism?
(en = H2NCH2 CH2 NH2 and is bidentate)
a)
d)
cis–Co(NH3)4Cl2 b) trans–Co(en)2Br2 c)
Co(NH3)3Cl3 e)
none of these
ANS:
c)
cis–Co(en)2Cl2
cis–Co(en)2Cl2
20) How many isomers of C3H8 are there?
a)
1
b) 2
ANS:
a)
c)
3 d)
5
e)
6
1
21) Propane undergoes dehydrogenation. The product of this is
a)
d)
ANS:
1-propene b) 2-propene c) cis-1-propene
trans-1-propene e) cis-2-propene
a)
1-propene
22) Classify the following molecule:
H3C C
H
O
a)
ANS:
23)
acid b)
b)
aldehyde c) amine d)
ketone
e)
carbonyl
ketone
e)
carbonyl
aldehyde
Classify the following molecule:
O
H3C
a)
ANS:
24)
C CH2CH3
acid b)
d)
aldehyde c) amine d)
ketone
Which of the following is optically active (i.e., chiral)?
a)
d)
ANS:
HN(CH3)2 b) CH2Cl2 c) 2-chloropropane
2-chlorobutane e) 3-chloropentane
d)
2-chlorobutane
25)
Which of the following pairs of substances could form a polyester?
a)
b)
c)
d)
e)
ANS:
26)
H2C=CHCH3 + HOCH2CH2COOH
HO(CH2)4COOH + HOCH2CH=CHCH3
H2C=CHCN + H2C=CHCH3
HOCH2CH2OH + HOOCCOOH
H2NCH2COOH + H2NCH2CH2COOH
d)
HOCH2CH2OH + HOOCCOOH
What organic molecules have the general formula RCOOH?
a) esters b) alcohols
ANS:
c)
c)
carboxylic acids d)
ketones
e) aldehydes
carboxylic acids
27) Nylon is an example of a
a) copolymer. b) homopolymer.
ANS:
a)
c) dimer.
d) two of these e) none of these.
copolymer.
28) A polypeptide is
a)
b)
c)
d)
e)
ANS:
an addition polymer of amino acids.
a condensation polymer of amino acids.
a polymer of sugar molecules.
a part of nucleic acids.
none of these
b)
a condensation polymer of amino acids.
29) Which statement (a–d) is false with respect to proteins?
a)
b)
c)
d)
e)
ANS:
Primary structure refers to the sequence of nucleotides.
Secondary structure includes -helixes.
Tertiary structure includes disulfide bonds.
The overall shape of a protein is related to the tertiary structure.
All are false.
a)
Primary structure refers to the sequence of nucleotides.
30) The complimentary nucleic acid sequence for the following DNA
sequence—ATG GAC GTA TTC—is
a) ATG GAC GTA TTC b) TAC CTG CAT AAG c) CGT TCA TGC GGA
d) CTT ATG CAG GTA e) none of these
ANS:
b)
TAC CTG CAT AAG