1) The hybridization of the central carbon atom in an aldehyde is ________.
A) sp
B) sp3
C) sp2
D) d2sp3
E) sp4
2) At a temperature of ________ °C, 0.444 mol of CO gas occupies 11.8 L at 839 torr.
A) 379
B) 73.0
C) 14.0
D) 32.0
E) 83.5
3) The molecular geometry of the left-most carbon atom in the molecule below is
________.
A) trigonal planar
B) trigonal bipyramidal
C) tetrahedral
D) octahedral
E) T-shaped
4) Which equation correctly represents the reaction between carbon dioxide and water?
A) CO2 (aq) + H2O (l) –> H2CO3 (aq)
B) CO2 (aq) + H2O (l) –> H2 (g) + CO (g) + O2 (g)
C) CO2 (aq) + H2O (l) –> H2O2 (aq) + CO (g)
D) CO2 (aq) + 2H2O (l) –> CH4 (g) + 2O2 (aq)
E) CO2(aq) + H2O (l) –> H2CO (aq) + O2 (g)
5) The concentration of iodide ions in a saturated solution of lead (II) iodide is
________ M. The solubility product constant of PbI2 is 1.4 x 10-8.
A) 3.8 x 10-4
B) 3.0 x 10-3
C) 1.5 x 10-3
D) 3.5 x 10-9
E) 1.4 x 10-8
6) What is the molecular formula for 1-hexanol?
A) C6H13O
B) C6H14O
C) C6H15O
D) C7H14O
E) C7H15O
7) What is the molarity of a NaOH solution if 15.5 mL of a 0.220 M H2SO4 solution is
required to neutralize a 25.0-mL sample of the NaOH solution?
A) 0.273
B) 0.355
C) 0.710
D) 42.6
E) 0.136
8) For the reaction
C(s) + H2O(g) –> CO(g) + H2(g)
H o = 133.3 kJ/mol and S o = 121.6 J/K mol at 298 K. At temperatures greater than
________ oC this reaction is spontaneous under standard conditions.
A) 273
B) 325
C) 552
D) 823
E) 1096
9) Which of the following reactions will not occur as written?
A) Zn (s) + Pb(NO3)2 (aq) → Pb (s) + Zn(NO3)2 (aq)
B) Mg (s) + Ca(OH)2 (aq) → Ca (s) + Mg(OH)2 (aq)
C) Sn (s) + 2AgNO3 (aq) → 2Ag (s) + Sn(NO3)2 (aq)
D) Co (s) + 2AgCl (aq) → 2Ag (s) + CoCl2 (aq)
E) Co (s) + 2HI (aq) → H2 (g) + CoI2 (aq)
10) The bond angles marked a, b, and c in the molecule below are about ________,
________, and ________, respectively.
A) 109.5°, 109.5°, 109.5°
B) 120°, 109.5°, 120°
C) 109.5°, 109.5°, 120°
D) 90°, 180°, 90°
E) 109.5°, 109.5°, 90°
11) The ________ subshell contains only one orbital.
A) 5d
B) 6f
C) 4s
D) 3d
E) 1p
12) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC)
The value of G o at 25 oC for the decomposition of gaseous sulfur trioxide to solid
elemental sulfur and gaseous oxygen,
2SO3 (g) –> 2S (s, rhombic) + 3O2 (g)
is ________ kJ/mol.
A) +740.8
B) -370.4
C) +370.4
D) -740.8
E) +185.2
13) What is the molecular formula for nonane?
A) C9H18
B) C9H20
C) C10H20
D) C10H22
E) C10H24
14) How many grams of CH3OH must be added to water to prepare 150 mL of a
solution that is 2.0 M CH3OH?
A) 0.0096
B) 430
C) 2.4
D) 9.6
E) 4.3
15) In the following reaction, which species is reduced?
Au(s) + 3NO3
–(aq) + 6H+(aq) → Au3+(aq) + NO(g) + 3H2O (l)
H+
N+5
O2-
H2O
Au
A) H+
B) N+5
C) O2-
D) H2O
E) Au