1) The symbol for the spin magnetic quantum number is ________.
A) ms
B) n
C) l
D) ml
E) sm
2) Based on the crystal-field strengths Cl– < F– < H2O < NH3 < H2NC2H4NH2, which
octahedral Ti (III) complex below has its d-d electronic transition at shortest
wavelength?
A) [Ti(NH3)6]3+
B) [Ti(H2NC2H4NH2)3]3+
C) [Ti(H2O)6]3+
D) [TiCl6]3-
E) [TiF6]3-
3) Using the VSEPR model, the electron-domain geometry of the central atom in ClO3
–
is ________.
A) linear
B) trigonal planar
C) tetrahedral
D) trigonal bipyramidal
E) octahedral
4) The main scientific difficulty in achieving a controlled fusion process is the
________.
A) enormous repulsion between nuclei being fused
B) enormous repulsion between the electrons of atoms being fused
C) very large number of positrons emitted
D) very large number of x -rays emitted
E) very large number of gamma rays emitted
5) Which of the following cannot form both high- and low-spin octahedral complexes?
A) Mn2+
B) V2+
C) Co3+
D) Cr2+
E) All of the above can form both high- and low-spin complexes.
6) A valid Lewis structure of ________ cannot be drawn without violating the octet
rule.
A) NI3
B) SO2
C) ICl5
D) SiF4
E) CO2
7) The coordination number of cobalt in CoCl3 6NH3 is ________.
A) 6
B) 7
C) 8
D) 1
E) 2
8) What is the oxidation state of cobalt in [Co(NH3)5Cl](NO3)2?
A) 0
B) 2
C) 3
D) 4
E) 6
9) How many moles of carbon monoxide are there in 36.55 g of carbon monoxide?
A) 0.8452
B) 1.305
C) 0.9291
D) 2.589
E) 3.046
10) The concentration of urea in a solution prepared by dissolving 16 g of urea in 25 g
of H2O is ________% by mass. The molar mass of urea is 60.0 g/mol.
A) 39
B) 64
C) 0.39
D) 0.64
E) 0.48
11) Consider the following electron configurations to answer the questions that follow:
(i)1s2 2s2 2p6 3s1
(ii)1s2 2s2 2p6 3s2
(iii)1s2 2s2 2p6 3s2 3p1
(iv)1s2 2s2 2p6 3s2 3p4
(v)1s2 2s2 2p6 3s2 3p5
The electron configuration belonging to the atom with the highest second ionization
energy is ________.
A) (i)
B) (ii)
C) (iii)
D) (iv)
E) (v)
12) What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? The Ksp of
PbCl2 is 1.6 x 10-5.
A) 2.0 x 10-3
B) 1.1 x 10-4
C) 1.8 x 10-4
D) 7.1 x 10-4
E) 1.6 x 10-5
13) The pH of a 0.60 M aqueous solution of formic acid, HCHO2, at 25.0 oC is 1.98.
What is the value of Ka for formic acid?
A) 2.0 x 10-5
B) 1.8 x 10-4
C) 6.0 x 10-5
D) 3.5 x 10-4
E) none of the above
14) How many isomers are possible for C5H12?
A) 1
B) 2
C) 3
D) 4
E) 10
15) What mass (g) of CaF2 is formed when 30.4 mL of 0.438 M NaF is treated with an
excess of aqueous calcium nitrate?
A) 0.520
B) 1.04
C) 1040
D) 0.171
E) 5420
16) On the phase diagram shown above, the coordinates of point ________ correspond
to the triple point.
A) A
B) B
C) C
D) D
E) E
17) Which equation correctly represents the third ionization of aluminum?
A) Al2+(g) → Al3+(g) + e–
B) Al(g) → Al+(g) + e–
C) Al2-(g) → Al3-(g) + e–
D) Al3+(g) + e– → Al2+(g)
E) Al+(g) → Al2+(g) + e–