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1) Which one of the following configurations depicts an excited carbon atom?
A) 1s22s22p13s1
B) 1s22s22p3
C) 1s22s22p1
D) 1s22s23s1
E) 1s22s22p2
2) A carbonyl compound contains ________.
A) a carbon-oxygen double bond
B) a carbon-oxygen triple bond
C) a carbon atom with a lone pair of electrons
D) a carbon-carbon triple bond
E) a carbon-carbon double bond
3) Metals can be ________ at room temperature.
A) liquid only
B) solid only
C) solid or liquid
D) solid, liquid, or gas
E) liquid or gas
4) The oxidation numbers of sulfur in the sulfate ion, sulfite ion, sulfur trioxide, and
hydrogen sulfide are ________, ________, ________, and ________, respectively.
A) +4, -2, +4, +6
B) +6, +2, +4, +6
C) +6, +4, +6, -2
D) +4, +6, +4, -2
E) -2, +6, -2, 0
5) The balanced equation for the decomposition of sodium azide is ________.
A) 2NaN3 (s) → 2Na (s) + 3N2 (g)
B) 2NaN3 (s) → Na2 (s) + 3N2 (g)
C) NaN3 (s) → Na (s) + N2 (g)
D) NaN3 (s) → Na (s) + N2 (g) + N (g)
E) 2NaN3 (s) 2Na (s) + 2N2 (g)
6) What is the wavelength of a photon with just enough energy to break a C-Cl bond?
(The bond energy of the C-Cl bond is 331 kJ/mole.)
A) 362 nm
B) 723 nm
C) 181 nm
D) 5.46 1035 nm
E) 5.50 10-19 nm
7) The Lewis structure of carbon dioxide is given below. The hybridization of the
carbon atom in carbon dioxide is ________.
A) sp3
B) sp2
C) sp
D) sp2d
E) sp2d2
8) The specific heat capacity of liquid mercury is 0.14 J/g-K. How many joules of heat
are needed to raise the temperature of 6.00 g of mercury from 25.1 °C to 65.3 °C?
A) 1.7 x 103 J
B) 34 J
C) 76 J
D) 5.8 x 10-4 J
E) 2.2 J
9) The value of Keq for the equilibrium
CO2 (g) + 2H2 (g) CH3OH (g)
is 14.5 at 483 oC. What is the value of Keq for the equilibrium below?
CO2 + H2 (g) CH3OH (g)
A) 7.30
B) 7.35
C) 0.136
D) 3.81
E) 6.90 x 10-2
10) Calculate the molality of a 21.6% (by mass) aqueous solution of phosphoric acid
(H3PO4).
A) 2.81 m
B) 276 m
C) 5.62 m
D) 1.41 m
E) The density of the solution is needed to solve the problem.
11) A complex that absorbs light at 700 nm will appear ________.
A) red
B) green
C) yellow
D) orange
E) violet
12) When the following equation is balanced, the coefficient of oxygen is ________.
PbS (s) + O2 (g) PbO (s) + SO2 (g)
A) 1
B) 3
C) 2
D) 4
E) 5
13) The heating curve shown was generated by measuring the heat flow and
temperature of a solid as it was heated. The heat flow into the sample in the segment
________ will yield the value of the Hvap of this substance.
A) AB
B) BC
C) CD
D) DE
E) EF
14) Which of the following is not currently used as an additive agent in gasoline?
A) toluene
B) ethanol
C) MTBE
D) tetraethyl lead
15) Which one of the following is a correct expression for molarity?
A) mol solute/L solvent
B) mol solute/mL solvent
C) mmol solute/mL solution
D) mol solute/kg solvent
E) ¼mol solute/L solution
16) The spectator ions in the reaction between aqueous chloric acid and aqueous barium
hydroxide are ________.
A) OH- and ClO3
-
B) H+, OH-, ClO3
-, and Ba2+
C) H+ and OH-
D) H+ and Ba2+
E) ClO3
- and Ba2+
17) The O-S-O bond angle in SO2 is slightly less than ________.
A) 90°
B) 109.5°
C) 120°
D) 180°
E) 60°
18) Of the compounds below, ________ is an isomer of
A)
B)
C)
D)
E)
