1) The molecular formula of a compound is always ________ the empirical formula.
A) more complex than
B) different from
C) an integral multiple of
D) the same as
E) simpler than
2) Which formula/name pair is incorrect?
A) Mn(NO2)2manganese(II) nitrite
B) Mg(NO3)2magnesium nitrate
C) Mn(NO3)2manganese(II) nitrate
D) Mg3N2magnesium nitrite
E) Mg(MnO4)2magnesium permanganate
3) A valid Lewis structure of ________ cannot be drawn without violating the octet
rule.
A) ClF3
B) PCl3
C) SO3
D) CCl4
E) CO2
4) The correct name for [Al(H2O)2(OH–)4]– is ________.
A) diwaterquatrahydroxyaluminum
B) tetrahydroxydiaquaaluminum (III)
C) diaquatetrahydroxoaluminate
D) aluminum (IV) hydroxide dihydrate
E) aluminumdihydratetetrahydroxide
5) The length of the side of a cube (in cm) having a volume of 44.4 L is ________.
A) 875
B) 35.4
C) 6.66
D) 66.6
E) 0.354
6) Which electron configuration represents a violation of the Pauli exclusion principle?
A)
B)
C)
D)
E)
7) An aqueous solution at 25.0oC contains [H+] = 0.085 M. What is the pH of the
solution?
A) 1.07
B) -1.07
C) 13.0
D) 0.0850
E) 1.20 x
8) Which one of the following elements has an allotrope that is produced in the upper
atmosphere by lightning?
A) N
B) O
C) S
D) Cl
E) He
9) Based on molecular orbital theory, the bond order of the N-N bond in the N2
2+ ion is
________.
A) 0
B) 3
C) 1
D) 2
E) 1/2
10) The oxidation number of B in B2O3 is ________.
A) +3
B) +2
C) +1
D) +4
E) +5
11) The condensed electron configuration of argon, element 18, is ________.
A) [Ne]3s4
B) [Ar]3s23p2
C) [Ne]3s23p6
D) [He]2s42p10
E) [He]3s4
12) One side of a cube measures 1.55 m. The volume of this cube is ________ cm3.
A) 2.40 X 104
B) 3.72 X 106
C) 2.40
D) 3.72
E) 155
13) Which of the following react with oxygen to form superoxides?
A) Ca
B) Na
C) K
D) Sr
E) Ba
14) The conjugate acid of CH3NH2 is ________.
A) CH3NH2
B) CH3NH3
+
C) CH3NH2
+
D) CH3NH+
E) none of the above
15) In which one of the following solutions is silver chloride the most soluble?
A) 0.181 M HCl
B) 0.0176 M NH3
C) 0.744 M LiNO3
D) pure water
E) 0.181 M NaCl
16) A solution contains 150.8 grams of NaCl in 678.3 grams of water. Calculate the
vapor pressure lowering (in torr) of the solution at 25.0 oC. (Note: The vapor pressure
of pure water at 25.0 oC is 23.76 torr.)
17) Name the compound, Cu(H2O)4
2+.
18) ________ is defined as the energy used to move an object against a force.
19) Benzene is a(n) ________ compound with ________ equivalent Lewis structures.
20) What is the partial pressure (in mm Hg) of neon in a 4.00 L vessel that contains
0.838 mol of methane, 0.184 mol of ethane, and 0.755 mol of neon at a total pressure of
928 mm Hg?
21) Elementary reactions involving the simultaneous collision of three molecules are
________.
22) Werner’s theory of primary and secondary valences for transition metal complexes
has given us the concepts of ________ and ________.