1) The bond length in an HI molecule is and the measured dipole moment is 0.44
D. What is the magnitude (in units of e) of the negative charge on I in HI?
(1 debye = 3.34 x 10-30 coulomb-meters; e = 1.6 x 10-19 coulombs)
A) 1.6 x 10-19
B) 0.057
C) 9.1
D) 1
E) 0.22
2) Consider the following reaction at equilibrium.
2CO2 (g) 2CO (g) + O2 (g)Ho = -514 kJ
Le Ch¢telier’s principle predicts that the equilibrium partial pressure of CO (g) can be
maximized by carrying out the reaction ________.
A) at high temperature and high pressure
B) at high temperature and low pressure
C) at low temperature and low pressure
D) at low temperature and high pressure
E) in the presence of solid carbon
3) In the equation below, M is most likely ________.
O + O2 + M –> O3 + M*
A) Cl2
B) N2
C) Ne
D) CO2
E) H2O
4) Which of these metals will be oxidized by the ions of aluminum?
A) magnesium
B) zinc
C) chromium
D) iron
E) nickel
5) The principal combustion products of compounds containing carbon and hydrogen in
the presence of excess O2 are ________.
A) CO2 and H2O
B) CO2 and H2O2
C) CO2 and H
D) C(graphite) and H2
E) CO2 and H2
6) The heating curve shown was generated by measuring the heat flow and temperature
for a solid as it was heated. The slope of the ________ segment corresponds to the heat
capacity of the solid.
A) AB
B) BC
C) CD
D) DE
E) EF
7) Which metal is not required to have its charge specified in the names of ionic
compounds it forms?
A) Cr
B) Ni
C) Zr
D) Na
E) Mo
8) The de Broglie wavelength of a ________ will have the shortest wavelength when
traveling at 30 cm/s.
A) marble
B) car
C) planet
D) uranium atom
E) hydrogen atom
9) Element M reacts with oxygen to form an oxide with the formula M2O. When M2O
is dissolved in water, the resulting solution is basic. Element M could be ________.
A) calcium
B) bromine
C) oxygen
D) carbon
E) nitrogen
10) Copper and chlorine form an ionic compound whose formula is CuCl2. The name of
this compound is ________.
A) copper chlorine
B) copper (III) dichloride
C) monocopper dichloride
D) copper (II) dichloride
E) cupric chloride
11) In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole
fraction of Ar is ________ if the partial pressures of He and Ne are 1.50 and 2.00 atm,
respectively.
A) 0.179
B) 0.238
C) 0.357
D) 0.583
E) 0.417
12) The correct name for HBrO is ________.
A) hydrobromic acid
B) perbromic acid
C) bromic acid
D) bromous acid
E) hypobromous acid
13) The equilibrium constant for the gas phase reaction
2SO2 (g) + O2 (g) 2SO3 (g)
is Keq = 2.80 x 102 at 999 K. At equilibrium, ________.
A) products predominate
B) reactants predominate
C) roughly equal amounts of products and reactants are present
D) only products are present
E) only reactants are present
14) At what velocity (m/s) must a 19.9 g object be moving in order to possess a kinetic
energy of 1.0 J?
A) 0.35 m/s
B) 2.8 m/s
C) 0.13 m/s
D) 0.031 m/s
E) 0.016 m/s
15) Consider the following species when answering the following questions:
For which of the molecules is the molecular geometry (shape) the same as the VSEPR
electron domain arrangement (electron domain geometry)?
A) (i) and (ii)
B) (i) and (iii)
C) (ii) and (v)
D) (iv) and (v)
E) (v) only
16) The general formula for an ether is ________.
A)
B)
C)
D)
E)
17) ________ is isoelectronic with krypton.
A) Se2-
B) Se3-
C) Br
D) Se2+
E) Te2-