Chemistry 116: General Chemistry
Syracuse University Project Advance
Exam #4, Spring 2005
NameDate
The last page of this examination should be a periodic table
(19)Sulfuryl chloride, SO2Cl2, decomposes in a first-order reaction when heated:
SO2Cl2(g) SO2(g) + Cl2(g)
In an experiment, the initial concentration of SO2Cl2 was 0.0248 mol/L. If the rate constant is 2.2 x 10-5/s, what is the concentration of SO2Cl2 after 120 seconds? (Set up and insert numerical values only)
(a)
(b)
(c)log[A]t – log(0.0248) = -(2.2x10-5)(120)
(d)
(e)
Chapter 21. Nuclear Chemistry
(153) The total number of protons and neutrons in the nuclide 37Cl is
(a) 54
(b) 37
(c) 20
(d) 17
(e)35.45
(154)The nuclear reaction
14C6 ------> 14N7 + 0e-1
is an example of
(a) nuclear fusion
(b) nuclear fission
(c) natural transmutation
(d) artificial transmutation
(e) none of the above
(155) How much of an 8 gram sample of radium-226 will remain unchanged at the end of two half-life periods?
(a) 1 g
(b) 2 g
(c) 3g
(d) 4 g
(e) 6 g
(156) In 6.20 hours, a 100 gram sample of an isotope decays to 25.0 grams. What is the half-life, in hours, of this isotope?
(a) 1.6
(b) 3.1
(c) 6.2
(d) 12.4
(e) 18.6
(157) The main purpose of a moderator in a fission reactor is to
(a) emit neutrons
(b) absorb neutrons
(c) slow down neutrons
(d) speed up neutrons
(e) create neutrons
(158) The atoms of some elements can be made radioactive by
(a) placing them in a strong magnetic field
(b) bombarding them with high-energy particles
(c) separating them into their isotopes
(d) heating them to a very high temperature
(e) all of the above
(159)The rate constant for the decay of 45Ca20 is 4.23 x 10-3/day. What is the half-life of 45Ca?
(a) 118 days
(b) 164 days
(c) 211 days
(d) 236 days
(e) none of these
(160)Identify the missing particle in the following equation:
238U92 ------> 4He2 + ?
(a) 242Pu94
(b) 234Th90
(c) 242Th90
(d) 234U92
(e) none of these
(161)Which of the following fundamental particles has the smallest mass?
(a) beta
(b) gamma
(c) proton
(d) neutron
(e) alpha
(162)What is the approximate age of an artifact found by an archeologist which has a specific activity due to carbon-14 of 4.14 counts per minute per gram of carbon? [Assume that living matter on the earth had an activity of 15.3 counts per minute per gram of carbon. The half-life of carbon-14 is 5560 years.]
(a) 4590 years
(b) 24300 years
(c) 9480 years
(d) 10600 years
(e) 22600 years
(163) What kind of radiation will travel through an electric field on a pathway that remains bend by the field?
(a) microwave.
(b) gamma ray.
(c) x-radiation.
(d) alpha particle.
(a)none of the above.
(164)188W decays by first order with a rate constant of 1.00 x 10-2 d-1. How long will it take for seven-eights of the initial amount of the reactant to be consumed?
(a)6.93 d
(b)69.3 d
(c)139 d
(d)208 d
(e)277 d
(165)In a first-order reaction the half-life is 11.6 minutes. The rate constant, k, in s-1 is
(a)1 x 10-3
(b)1 x 10-4
(c)700
(d)1000
(e)2000
Chapter 26. The Chemistry of Life: Organic and Biological Chemistry
(172)What is the IUPAC name for the hydrocarbon whose condensed structural formula is shown below?
(a)2-ethyl-3,6-dimethylhexane
(b)1,4-dimethyl-5-ethylhexane
(c)3,4-dimethyloctane
(d)5,6-dimethyloctane
(e)none of the above
(173)Which of the following statements is/are correct?
1. CH3CH2CH2CH2CH3 and are structural isomers.
2. In the primary process of vision, a light photon provides the energy needed to convert
one geometrical isomer, 11-cis-retinal, into the other, 11-trans-retinal.
3.
(a)1
(b)2
(c)3
(d)1 and 2
(e)2 and 3
(174)List, in order (i) through (iv), the functional group for each of the following compounds:
1. amide5. ester
2. aldehyde6. ketone
3. alcohol7. ether
4. carboxylic acid
(a)2, 1, 3, 7
(b)7, 2, 3, 6
(c)7, 1, 4, 2
(d)5, 6, 4, 2
(e)3, 1, 5, 2
(175)Which of the following statements is/are correct?
1.The carbon-carbon bonding in benzene, C6H6, is described in terms of two resonance
structures, leading to resonance stabilization of the molecule.
2.The following molecule is a secondary alcohol:
3.An amide linkage arises from a condensation reaction between a carboxylic acid and
a amine.
(a)1
(b)2
(c)2 and 3
(d)1 and 2
(e)1 and 3
(176)Which of the following statements is/are correct?
1.Solid fats and liquid oils are ethers arising from the reaction of fatty carboxylic acids
and the alcohol glycerol (1,2,3-trihydroxypropane).
2.is a primary amine.
3.The IUPAC name of the following compound is a 1-pentanone:
HOCH2CH2CH2CH2CH3.
(a)1
(b)2
(c)3
(d)none are correct
(e)all are correct
(177)The IUPAC name for the compound shown below
(a)is cis-3-hexene.
(b)is trans-3-hexene
(c)is trans-3-hexyne
(d)is cis-3-hexyne
(e)is none of the above
(178)Which of the following statements is NOT correct?
(a)The primary structure of DNA is a polynucleotide chain.
(b)The structure of DNA is stabilized by hydrogen bonds between the following
specific base pairs: adenine-guanine and thymine-cytosine.
(c)Only a small percentage of the DNA chain consists of “genes” that code for
specific proteins.
(179)Which of the following compounds has the greatest possible number of isomers?
(a) butane
(b) ethane
(c) pentane
(d) propane
(e) methane
Chapter 12. Materials Chemistry and Polymers
(180)The monomer unit for the addition polymer Polyvinylidene chloride is vinylidene chloride (CH2 = CCl2). What is the formula for the repeating unit of this polymer?
(181)Which of the following statements is/are correct?
1.A free radical is used to initiate addition polymerizations.
2.The following polymers are addition polymers: Polyethylene, polypropylene and
polyesters.
3.Kevlar, with the repeating unit shown below, is an addition polymer:
(a)1
(b)2
(c)3
(d)all are correct
(e)none are correct
(182)Which of the following possible pairs of monomer molecules is/are NOT appropriate to form a co-polymer through condensation polymerization?
1.
2.
3.
(a)1
(b)2
(c)3
(d)all are appropriate
(e)none are appropriate
(183)Identify the phase transition occurring in each of the following:
1.Rubbing alcohol spilled on the palm of the hand feels cool as the volume of liquid decreases.
2.Raindrops hit a cold metal surface, which becomes covered with ice.
3.Candle wax turns to liquid under the heat of the candle flame.
(a)(1) freezing(2) condensation(3) vaporization
(b)(1)vaporization(2) freezing(3) melting
(c)(1)condensation(2) vaporization(3) freezing
(d)(1)vaporization(2) condensation(3) freezing
(e)(1)condensation(2) freezing(3) vaporization
(184)Surface tension is defined as:
1.The rise of a liquid in a small-diameter glass tube.
2.The energy required to remove a molecule from the surface of a liquid.
3.The energy required to increase the surface area of a liquid by a unit amount.
4.The resistance to flow exhibited by all liquids and gases.
5. The phenomenon which gives rise to the skin on a dish of chocolate pudding.
(a)1
(b)2
(c)3
(d)4
(e)5
(185)The polymerization of ethylene (C2H4) to form polyethylene occurs by a(n)
(a)addition reaction.
(b)condensation reaction.
(c)copolymerization reaction.
(d)esterification reaction.
(e)transesterification reaction.
EXAM KEY HOURLY EXAM QUESTIONS SUPA CHEMISRTY SPRING 2005
1 / D / 48 / D / 95 / B / 142 / C2 / D / 49 / B / 96 / E / 143 / B
3 / B / 50 / D / 97 / E / 144 / D
4 / A / 51 / E / 98 / C / 145 / D
5 / B / 52 / D / 99 / D / 146 / A
6 / C / 53 / C / 100 / A / 147 / D
7 / C / 54 / E / 101 / C / 148 / B
8 / D / 55 / B / 102 / B / 149 / C
9 / E / 56 / A / 103 / B / 150 / B
10 / E / 57 / A / 104 / A / 151 / E
11 / A / 58 / E / 105 / E / 152 / A
12 / D / 59 / A / 106 / C / 153 / B
13 / C / 60 / D / 107 / B / 154 / C
14 / E / 61 / E / 108 / D / 155 / B
15 / C / 62 / D / 109 / E / 156 / B
16 / A / 63 / C / 110 / D / 157 / B
17 / C / 64 / B / 111 / D / 158 / B
18 / C / 65 / D / 112 / D / 159 / B
19 / E / 66 / B / 113 / E / 160 / B
20 / E / 67 / C / 114 / B / 161 / B
21 / D / 68 / E / 115 / D / 162 / D
22 / A / 69 / A / 116 / A / 163 / D
23 / C / 70 / A / 117 / D / 164 / D
24 / B / 71 / A / 118 / B / 165 / A
25 / E / 72 / E / 119 / A / 166 / A
26 / D / 73 / D / 120 / E / 167 / A
27 / E / 74 / E / 121 / D / 168 / B
28 / D / 75 / B / 122 / E / 169 / A
29 / C / 76 / A / 123 / E / 170 / D
30 / D / 77 / C / 124 / A / 171 / C
31 / C / 78 / B / 125 / B / 172 / C
32 / E / 79 / C / 126 / C / 173 / D
33 / E / 80 / B / 127 / D / 174 / C
34 / D / 81 / C / 128 / E / 175 / E
35 / C / 82 / A / 129 / C / 176 / D
36 / C / 83 / E / 130 / A / 177 / A
37 / A / 84 / C / 131 / B / 178 / B
38 / D / 85 / C / 132 / C / 179 / C
39 / C / 86 / D / 133 / A / 180 / B
40 / E / 87 / E / 134 / D / 181 / A
41 / B / 88 / E / 135 / E / 182 / C
42 / C / 89 / C / 136 / C / 183 / B
43 / C / 90 / E / 137 / A / 184 / C
44 / E / 91 / A / 138 / E / 185 / A
45 / B / 92 / B / 139 / C
46 / A / 93 / B / 140 / E
47 / B / 94 / C / 141 / A
CHE 1161 Spring 2005 Exam Questions