1) The ________ ion has eight valence electrons.
A) Sc3+
B) Ti3+
C) V3+
D) Cr3+
E) Mn3+
2) In a hydrogen atom, an electron in a ________ orbital can absorb a photon, but
cannot emit a photon.
A) 3s
B) 2s
C) 3p
D) 1s
E) 3f
3) The Mond process produces pure nickel metal via the thermal decomposition of
nickel tetracarbonyl:
Ni(CO)4 (l) → Ni (s) + 4CO (g).
What volume (L) of CO is formed from the complete decomposition of 444 g of
Ni(CO)4 at 752 torr and 22.0 °C?
A) 0.356
B) 63.7
C) 255
D) 20.2
E) 11.0
4) The concentration of sulfate ions in a 0.233 M solution of sulfuric acid is ________.
A) 0.699 M
B) 0.233 M
C) 0.466 M
D) 0.0777 M
E) 0.155 M
5) Which of the following correctly represents the second ionization of aluminum?
A) Al+ (g) + e– → Al (g)
B) Al (g) → Al+ (g) + e–
C) Al– (g) + e– → Al2- (g)
D) Al+ (g) + e– → Al2+ (g)
E) Al+ (g) → Al2+ (g) + e–
6) Gas, isolated from petroleum, has a minimum of ________ carbon atoms.
A) 1
B) 36
C) 20
D) 16
E) 12
7) What is the pH of an aqueous solution at 25.0 oC in which [OH–] is 0.0030 M?
A) 5.81
B) -11.48
C) 2.52
D) -2.52
E) 11.48
8) According to the phase diagram shown above, the normal boiling point of this
substance is ________ oC.
A) -3
B) 10
C) 29
D) 38
E) 0
9) Based on molecular orbital theory, the bond order of the H-H bond in the H2
+ ion is
________.
A) 0
B) 1/2
C) 1
D) 3/2
E) 2
10) A particular first-order reaction has a rate constant of 1.35 x 102 s-1 at 25.0 oC.
What is the magnitude of k at 75.0 oC if Ea = 55.3 kJ/mol?
A) 2.24 x 104
B) 3.34 x 103
C) 433
D) 2.49 x 106
E) 1.35 x 102
11) 131I has a half-life of 8.04 days. Assuming you start with a 1.03 mg sample of 131I,
how many mg will remain after 13.0 days?
A) 0.326
B) 0.268
C) 0.422
D) 0.0781
E) 0.336
12) The more effectively two atomic orbitals overlap, ________.
A) the more bonding MOs will be produced by the combination
B) the higher will be the energy of the resulting bonding MO and the lower will be the
energy of the resulting antibonding MO
C) the higher will be the energies of both bonding and antibonding MOs that result
D) the fewer antibonding MOs will be produced by the combination
E) the lower will be the energy of the resulting bonding MO and the higher will be the
energy of the resulting antibonding MO
13) How high a liquid will rise up a narrow tube as a result of capillary action depends
on ________.
A) the magnitudes of cohesive forces in the liquid and adhesive forces between the
liquid and the tube, and gravity
B) gravity alone
C) only the magnitude of adhesive forces between the liquid and the tube
D) the viscosity of the liquid
E) only the magnitude of cohesive forces in the liquid
14) An 6.11 g sample of calcium carbonate [CaCO3 (s)] absorbs 84 J of heat, upon
which the temperature of the sample increases from 19.2 °C to 35.9 °C. What is the
specific heat of calcium carbonate?
A) 0.82 J/g-K
B) -0.82 J/g-K
C) 31 J/g-K
D) 230 J/g-K
E) 8600 J/g-K