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1) Which formula/name pair is incorrect?
A) FeSO4iron(II) sulfate
B) Fe2(SO3)3 iron(III) sulfite
C) FeSiron(II) sulfide
D) FeSO3iron(II) sulfite
E) Fe2(SO4)3 iron(III) sulfide
2) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC)
The value of S o for the oxidation of solid elemental sulfur to gaseous sulfur dioxide,
S (s, rhombic) + O2(g) --> SO2(g)
is ________ J/K mol.
A) +485.4
B) +248.5
C) -11.6
D) -248.5
E) +11.6
3) Which of the following compounds does not contain a C O bond?
A) alcohols
B) aldahydes
C) carboxylic acids
D) esters
E) none of the above
4) Which one of the following configurations depicts an excited oxygen atom?
A) 1s22s22p2
B) 1s22s22p23s2
C) 1s22s22p1
D) 1s22s22p4
E) [He]2s22p4
5) Which one of the following could be a cyclic alkane?
A) C5H10
B) C6H5
C) C3H5
D) C2H6
E) C10H22
6) When the electron in a hydrogen atom moves from n = 5 to n = 2, light with a
wavelength of ________ nm is emitted.
A) 93.8
B) 410
C) 487
D) 657
E) 434
7) Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2):
CaC2 (s) + 2H2O (g) → Ca(OH)2 (s) + C2H2 (g)
Production of 13 g of C2H2 requires consumption of ________ g of H2O.
A) 4.5
B) 9.0
C) 18
D) 4.8 x 102
E) 4.8 x 10-2
8) Of the following, the subatomic particle with the smallest mass is the ________.
A) proton
B) neutron
C) electron
D) alpha particle
E) isotope
9) Vanadium has two naturally occurring isotopes, with an atomic mass of 49.9472
amu and51V with an atomic mass of 50.9440. The atomic weight of vanadium is
50.9415. The percent abundances of the vanadium isotopes are ________% 50V and
________% .
A) 0.25, 99.75
B) 99.75, 0.25
C) 49, 51
D) 1.0, 99
E) 99, 1.0
10) Of the atoms below, ________ is the most electronegative.
A) Ba
B) Sr
C) Ca
D) Mg
E) Be
11) The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25.0 oC is
4.48. What is the value of Ka for HBrO?
A) 2.0 x 10-9
B) 1.1 x 10-9
C) 6.0 x 10-5
D) 3.3 x 10-5
E) 3.0 x 104
12) Solid aluminum and gaseous oxygen react in a combination reaction to produce
aluminum oxide:
4Al (s) + 3O2 (g) → 2Al2O3 (s)
In a particular experiment, the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of
Al2O3. The % yield of the reaction is ________.
A) 74
B) 37
C) 47
D) 66
E) 26
13) A certain liquid has a density of 2.67 g/cm3. 30.5 mL of this liquid would have a
mass of ________ Kg.
A) 81.4
B) 11.4
C) 0.0875
D) 0.0814
E) 0.0114
14) Using the VSEPR model, the molecular geometry of the central atom in ClO2
- is
________.
A) linear
B) trigonal planar
C) tetrahedral
D) bent
E) trigonal pyramidal
15) How many total electrons are in the O2- ion?
A) 10
B) 8
C) 9
D) 16
E) 18
