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1) In terms of binding energy per nucleon, what element divides fission and fusion
processes?
A) H
B) He
C) C
D) Fe
E) U
2) Which mineral contains titanium?
A) pyrolusite
B) chalcopyrite
C) galena
D) rutile
E) sphalerite
3) Which of the following is a statement of Hess's law?
A) If a reaction is carried out in a series of steps, the ΔH for the reaction will equal the
sum of the enthalpy changes for the individual steps.
B) If a reaction is carried out in a series of steps, the ΔH for the reaction will equal the
product of the enthalpy changes for the individual steps.
C) The ΔH for a process in the forward direction is equal in magnitude and opposite in
sign to the H for the process in the reverse direction.
D) The ΔH for a process in the forward direction is equal to the ΔH for the process in
the reverse direction.
E) The ΔH of a reaction depends on the physical states of the reactants and products.
4) Formation of a complex species of Mn+ metal ion with ligands often ________.
A) "masks" original chemical properties of both the Mn+ ion and the ligands
B) reduces availability of the free Mn+ions in solution
C) may cause changes in the ease with which Mn+ is reduced or oxidized
D) alters original physical properties of Mn+
E) all of the above
5) Although CaCO3 is essentially insoluble in pure water, it dissolves slowly in acidic
ground water due to formation of ________.
A) insoluble Ca(OH)2
B) soluble Ca(OH)2
C) insoluble Ca(HCO3)2
D) soluble Ca(HCO3)2
E) soluble CaO
6) How many milliliters of 0.0839 M NaOH are required to titrate 25.0 mL of 0.0990 M
HBr to the equivalence point?
A) 29.5
B) 0.332
C) 4.57
D) 0.208
E) 21.2
7) Alkaline earth metals ________.
A) have the smallest atomic radius in a given period
B) form monoanions
C) form basic oxides
D) exist as triatomic molecules
E) form halides with the formula MX
8) The volume of fluorine gas required to react with 4.26 g of calcium bromide to form
calcium fluoride and bromine at 25.0 °C and 4195 torr is ________ L.
A) 0.0943
B) 0.241
C) 241
D) 1.24 x 10-4
E) 0.124
9) The oxidation of ethanol produces ________.
A) acetic acid
B) formic acid
C) citric acid
D) lactic acid
E) oxalic acid
10) In which species does chlorine have an oxidation number of zero?
A) Cl2
B) HClO4
C) NaClO3
D) Cl-
E) HCl
11) Of the following, only ________ has sp2 hybridization of the central atom.
A) NF3
B) HCN
C) BF3
D) ICl3
E) CH4
12) Draw the Lewis structure of ICl2
+.
13) 2.98 lbs = ________ grams.
14) All of the subshells in a given shell have the same energy in the hydrogen atom. In a
many-electron atom, the subshells in a given shell do not have the same energy. Why?
15) Of the nonradioactive halogens, which is the largest?
16) Ozone is more efficient at killing bacteria in water, yet chlorine is used more
commonly for that purpose in municipal water treatment. Why?
17) The porphyrin compound that contains Mg (II) is called ________.
18) If a rate law is second order (reactant), doubling the reactant ________ the reaction
rate.
19) What sulfur gas is used to sterilize wine?
