Chemistry 116: General Chemistry
Syracuse University Project Advance
Final Exam, Spring 2006
Name
Date
[Gas constant = 8.314 J/mol K; 0.08206 L-atm/mole-K 1 faraday = 96500 J/V mol e-]
1. The reaction, NO2(g) + CO(g)  NO(g) + CO2(g), is under study. The
following two-step mechanism is proposed:
2CO(g)  CO2(g) + C(g)
(slow)
C(g) + NO2(g)  NO(g) + CO(g) (fast)
What rate law is expected for this mechanism?
A.
B.
C.
D.
E.
rate = k[CO]2[C][NO2]
rate = k[CO]2
rate = k[NO][CO2]/[NO2][CO]
rate = k[NO2][CO]
rate = k[C][NO2]
2. For the exothermic equilibrium, 2C2H2(g) + 5O2(g)
4CO2(g) + 2H2O(l), the
partial pressure of C2H2 will ________ if some of the O2 is removed, and will
________ if the temperature is increased.
A.
B.
C.
D.
E.
increase, decrease
decrease, increase
decrease, decrease
increase, increase
decrease, stay the same
3. For the weak base, B-, Kb =
A.
B.
C.
D.
E.
[HB]/[B-]
[B-]/[HB]
[HB]/[B-][H+]
[HB][OH-]/[B-][H2O]
[HB][OH-]/[B-]
CHE 116
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Spring 2006 Final Exam
4. Which of the following processes would be expected to have a S value very close to
zero?
A.
B.
C.
D.
E.
H2O(s) 
 H2O(l)
H2O(s) 
 H2O(g)
OF2(g) + H2O(g) 
 O2(g) + 2HF(g)
2H2(g) + O2(g) 
 2H2O(g)
N2(g) + O2(g) 
 2NO(g)
5. The IUPAC name for
CH2CH2CH3
is
CH3CHCHCH2CH3
CH3
A.
B.
C.
D.
E.
2-methyl-3-propylpentane
3-ethyl-2-methylhexane
4-methyl-3-propylpentane
4-ethyl-5-propylhexane
1,1-dimethyl-2-propylbutane
6. Ksp for Pb3(PO4)2 is 10-44. Two solutions are mixed, one containing Pb2+ and the other
PO43-. If, at the instant of mixing, Pb2+ is 10-10 M and PO43- is 10-8 M, which one of
the following statements is true? (Qc is the ion product.)
A.
B.
C.
D.
E.
No precipitate forms because Qc < Ksp
No precipitate forms because Qc > Ksp
No precipitate forms because Qc = Ksp
A precipitate forms because Qc > Ksp
A precipitate forms because Qc < Ksp
7. For any system at equilibrium at constant temperature and pressure,
A.
B.
C.
D.
E.
H = T S
H = -TS
H = S
G = T S
G = -TS
8. What is the pH of a solution at 25oC in which [OH-] = 3.4 x 10-5 M?
A.
B.
C.
D.
E.
4.5
10.5
9.5
6.3
None of these
CHE 116
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Spring 2006 Final Exam
9. A 0.40 gram sample of NaOH (s) is added to enough water to make 250 ml of solution.
What is the pH of this solution?
A.
B.
C.
D.
E.
12.000
1.398
2.000
12.602
none of these
 (CH3)3COH + Cl- it is found
10. For the reaction (CH3)3CCl + OH- 
experimentally that doubling the concentration of (CH3)3CCl causes the reaction rate
to be increased twofold but doubling the concentration of OH- has no effect on the
rate. The rate equation is
A. Rate = k[(CH3)3CCl]2[OH-].
B. Rate = k[(CH3)3CCl][OH-].
C. Rate = k[(CH3)3COH][Cl-].
 CH3 3 COH  Cl- 
D. Rate  k
 CH3 3 CCl  OH - 
E. Rate = k[(CH3)3CCl]
11. Which of the following substances, when added to a solution of hydrofluoric acid,
could be used to prepare a buffer solution?
A.
B.
C.
D.
E.
HCl
NaNO3
NaF
NaCl
none of these
12. Which of the following compounds can occur as cis and trans isomers?
A.
B.
C.
D.
E.
CH3CH=CH2
CH3CH=C(CH3)2
CH3CH=CHCH2CH3
(CH3)2CHCH2CH3
(CH3)2C=O
CHE 116
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Spring 2006 Final Exam
13. Which of the following statements, referring to the reaction below, is correct?
2N2O(g) + N2O4(g)  6NO(g)
A.
B.
C.
D.
E.
The N2O is an oxidizing agent and the N2O4 is a reducing agent.
The N2O4 is an oxidizing agent and the N2O is a reducing agent.
Both N2O and N2O4 are oxidizing agents.
Both N2O and N2O4 are reducing agents.
No oxidation or reduction occurs in this reaction.
14. When the reaction system, Br2(g) + Cl2(g)
2BrCl(g), was at equilibrium, the
concentrations of Br2, Cl2, and BrCl were 0.0060 M, 0.0095 M, and 0.015 M,
respectively. The value of Kc for this system is
A.
B.
C.
D.
E.
3.9
53
27
260
0.25
15. The first nuclear reaction that was ever observed occurred when nitrogen-14 was
bombarded with alpha particles. One product was a proton, and the other was
A.
B.
C.
D.
E.
17
7
17
9
18
9
17
8
16
8
A.
B.
C.
D.
E.
0.090
0.075
0.450
0.175
0.1125
N
F
F
O
O



16. Calculate the molarity (M) of the final solution after 20 mL of 0.30 M KOH is added

to 100 mL of 0.15 M HCN.

17. For the reaction
3C(s) + 4H2(g)
C3H8(g)
S0 = 269 J/(mol.K), H0 = 103.8 kJ/mol
Calculate the equilibrium constant at 25oC for the reaction above.
A.
B.
C.
D.
E.
1.0
1.4  104
1.0  1017
3.7  1019
2.1  1032
CHE 116
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Spring 2006 Final Exam
18. Calculate the molar solubility of BaCO3 (Ksp = 1.6 x 10-9) in 0.10 M BaCl2 solution.
A.
B.
C.
D.
E.
1.6 x 10-8
1.6 x 10-10
4.0 x 10-5
4.1 x 10-12
5.1 x 10-8
19. Which of the following is a redox reaction?
A.
B.
C.
D.
E.
NaOH + HCl  NaCl + H2O
Pb+2 + 2Cl-  PbCl2
2Al + 3Cl2  2AlCl3
AgNO3 + HCl  HNO3 + AgCl
NH3 + H2O  NH4+ + OH-
20. If a reaction is endothermic and spontaneous at 25°C and 1 atm, it may be
A.
B.
C.
D.
E.
endothermic at higher temperatures.
nonspontaneous at all temperatures.
endothermic at lower temperatures.
spontaneous at lower temperatures.
spontaneous at higher temperatures.
21. A molecule with the structural formula
CH3
OH H
H
O
C
C
C
C
H
NH2 H
CH3
contains the functional groups (not necessarily in order)
A.
B.
C.
D.
E.
ketone, amine, and alcohol.
carboxylic acid, amine, and ether.
aldehyde, amide, and ketone.
aldehyde, amide, and alcohol.
ketone, amide, and alcohol.
22. Choose the correct statement.
A.
B.
C.
D.
Exothermic reactions are always spontaneous
Free energy is independent of temperature
A reaction that exhibits a negative value of S can not be spontaneous
At constant pressure and temperature, a decrease in free energy ensures an
increase in entropy of the system
E. None of these
CHE 116
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Spring 2006 Final Exam
23. Which of the following reactions would have a POSITIVE value for S0?
A.
B.
C.
D.
E.
Ba(OH)2 (s) + CO2 (g)  BaC03 (s) + H2O (l)
N2 (g) + 3H2 (g)  2NH3 (g)
2SO3 (g)  2SO2 (g) + O2 (g)
AgNO3 (aq) + HCl (aq)  AgCl (s) + HNO3 (aq)
None of these
24. Consider the following electrode potentials:
Mg2+ + 2e-  Mg
V2+ + 2e-  Mg
Cu2+ + e-  Cu+
E˚ = -2.37 V
E˚ = -1.18 V
E˚ = 0.15 V
Which of the following reactions will proceed spontaneously from left to right?
A.
B.
C.
D.
E.
Mg2+ + V  Mg + V2+
Mg2+ + 2Cu+  Mg + 2Cu2+
V2+ + 2Cu+  V + 2Cu2+
V + 2Cu2+  V2+ + 2Cu+
none of these
25. What is the coefficient of H2O when the following equation is correctly balanced?
ClO - + S2O3 -2  Cl - + SO4 -2 BASIC SOLUTION
A.
B.
C.
D.
E.
1
2
3
4
none of these
26. What is the value of Ho for this reaction at 25oC?
C (s) + H2O (l)  CO (g) + H2 (g)
A.
B.
C.
D.
E.
Go = 91.2 kJ
So = 135 J
40.3 kJ
226 kJ
91.3 kJ
131.4 kJ
none of these
CHE 116
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Spring 2006 Final Exam
27. A living tree contains 146 C (half-life 5,600 years) and has a specific activity of 750
counts per hour. A wooden artifact recovered from an archeological site gives a
count of 90 counts per hour. The age of this artifact is most nearly
A.
B.
C.
D.
E.

5,600 years.
11,000 years.
17,000 years.
22,000 years.
47,000 years.
28. Comparing the titration of 10 ml of a strong acid (0.02 M) with 0.1 M NaOH with the
titration of 10 ml of a weak acid (0.02 M) with 0.1 M NaOH, which of the following
would not be expected to differ? (recall nML = nML)
A.
B.
C.
D.
E.
the initial pH of NaOH
the pH at the point halfway to the equivalence point
the pH at the equivalence point
the volume of NaOH required to reach the equivalence point
the increase in pH in the vicinity of the equivalence point
29. The gas-phase decomposition of N2O to form N2 and O2 is first order in N2O. At
1000 K, the half-life for this process is 0.91 s. What is the rate constant at this
temperature?
A.
B.
C.
D.
E.
0.76 s-1
0.76 M/s
1.1 s-1
1.1 M/s
need more information
30. What is the pH of a 0.02 M solution of benzoic acid (Ka = 6.3 x 10-5)?
A.
B.
C.
D.
E.
1.9
2.9
3.5
5.9
6.5
31. Hydrolysis of BaCl3 results in formation of
A.
B.
C.
D.
E.
a base and an acid
a base and a non-reactive by-product
an acid and a non-reactive by-product
two bases
two acids
CHE 116
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Spring 2006 Final Exam
32. The respective masses in amu of the proton, the neutron, and nickel-60 atom are
1.00728, 1.00867, and 59.9308. What is the mass defect, in g/mole of the nickel-60
atom?
A.
B.
C.
D.
E.
0.5505
0.5449
0.6060
0.6111
0.7280
33. Calculate the voltage of the cell
2Ag+(aq) (0.010 M) + Cu(s)  2Ag(s) + Cu2+(aq) (0.10 M)
at 25˚C, given that E˚cell = 0.460 V.
A.
B.
C.
D.
E.
0.282 V
0.371 V
0.430 V
0.460 V
0.519 V
34. Which of the following types of nuclear decay results in an increase in the atomic
number?
A.
B.
C.
D.
E.
electron capture
alpha emission
beta emission
gamma emission
positron emission
35. The following data were obtained for the reaction: 2A + B  C + 2D
[A]
0.13
0.26
0.26
[B]
0.13
0.13
0.26
initial rate, M/sec
0.071
0.28
0.28
What is the correct rate law for this reaction?
A.
B.
C.
D.
E.
Rate = k[A]2
Rate = k[A][B]
Rate = k[A]2[B]
Rate = k[B]
Rate = k[C][D]2 / [A]2[B]
CHE 116
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Spring 2006 Final Exam