1. Potassium chloride dissolved in pure water is an
example of
A) an ionic compound dissolved in a polar solvent
B) an ionic compound dissolved in a nonpolar
solvent
C) a covalent compound dissolved in a polar solvent
D) a covalent compound dissolved in a nonpolar
solvent
E) an ionic molecule mixed with a polar compound
2. What bonds exists between water molecules but not
between hydrogen and oxygen in water molecules?
A)
B)
C)
D)
E)
ionic bonding
covalent bonding
hydrogen bonding
electrovalent bonding
Van der Waals
ionic bonding
covalent bonding
hydrogen bonding
van der Waals forces
network bonding
B)
C)
D)
E)
is bent
is linear
has two nonbonding electrons
has one double and one single bond
trigonal planar
6. The name corresponding to the formula Fe(ClO 4) 2 is
A)
B)
C)
D)
E)
iron dichlorate.
iron (II) chlorate.
iron (II) perchlorate.
iron (III) perchlorate.
iron dichloride
8. Element A has 2 valence electrons and element B has
7 valence electrons. The formula of the ionic
compound formed between A and B is
A) AB 3
B) A2B
C) AB 2
D) A7B2 E) AB
When this equation is balanced with simplest whole
number the coefficient of O2 is
A) 3/ 2
B) 2
C) 3
D) 4
E) 5
10. A gas occupies a 1.5 liter container at 25°C and 2.0
atmospheres. If the gas is transferred to a 3.0 liter
container at the same temperature, what will be the
new pressure ?
5. The molecule carbon dioxide, CO 2,
A)
B)
C)
D)
E)
mercury chloride
mercury (I) chloride
mercurous chloride
mercury (II) chloride
mercury dichloride
C2H4 + O2 ® CO 2 + H2O
4. The Lewis electron dot representation of element 16
is
A)
A)
B)
C)
D)
E)
9. Consiter the equation below
3. What intermolecular bonding holds the molecules of I
2 together in an iodine crystal?
A)
B)
C)
D)
E)
7. A compound with the chemical formula HgCl2 is
named
A) 1.0 atm
C) 3.0 atm
E) 6.0 atm
B) 2.0 atm
D) 5.0 atm
11. Charles’ law can be expressed by the relation
A) V2T1 = V1T2
C) V1T1 = V2T2
E) P2T1 = P1T2
B) V1V2 = T1T2
D) V1P2 = V2P1
12. If a reaction had a percent yield of 80% and yielded
.73 grams of product, what was the theoretical yield
of the reaction?
A) 0.91g
B) 1.10g
C) 9.10g
D) 0.80
E) none of the above
13. An aqueous solution of an Arrhenius base
A)
B)
C)
D)
E)
has a pH of 7
turns litmus red
reacts with copper
is a good conductor of electricity
tastes sour
14. Base your answer to the following question on the
data from the chart below.
18. What is the charge and the reaction occurring at the
anode of an electrolysis reaction?
A)
B)
C)
D)
E)
(+), oxidation
(+), reduction
(–), reduction
(–), oxidation
reactions only occur at the cathode
19. In the reaction,
2 H2S(g) + O 2(g) ® 2 H2O(g) + 2 S(g)
Which can never be an acid?
A) HS –
C) NH 3
E) HOOCCOO –
B) H2O
D) NO 2–
15. A strong base solution
A)
B)
C)
D)
E)
is slightly ionized
reacts with zinc metal
turns phenolphthalein pink
is a poor electrical conductor
turns litmus purple
16. Which is a Brönsted–Lowry conjugate acid–base
pair?
HSO 4–+ HPO 42– « SO 42– + H2PO 4–
A) I
C) III
E) both II and IV
B) II
D) IV
17. Which element is the best oxidizing agent?
A) Aluminum
C) Chlorine
E) Sodium
B) Bromine
D) Fluorine
the element oxidized is
A) Oxygen in O2
C) Oxygen in H2O
E) Hydrogen in H2S
B) Sulfur in H 2S
D) Hydrogen in H2O
20. When 1.0 mole of potassium chlorate, KClO 3 ,
decomposes the number of moles of O 2 produced is
2 KClO 3 ® 2 KCl + 3 O 2
A) 1.0.
B) 2.0.
C) 3.0.
D) 1.5.
E) 4.5.
21. Which is the graph which shows the reaction path for 23. Consider the following factors:
an endothermic reaction with a high activation
energy?
I. Reactant particles collide
II. Sufficient kinetic energy is present
A)
III. A favorable geometry exists
IV. Catalysts are present
Which combination of the above factors is required
for all successful collisions?
B)
A) I only
C) I and III only
E) I, II and III only
B) II and III only
D) I, II, III and IV
24. For a reaction, the enthalpy change is –210 kJ, the
entropy change is –170 J•mol –1•K –1 and the
temperature is 400 K. What is the free energy
change, DG°, in kJ?
C)
A) +27,000 kJ
C) –210 kJ
E) –40,000 kJ
B) –142 kJ
D) –278 kJ
25. Which reactions occur spontaneously?
D)
E)
22. A catalyst increases the rate of reaction by
A)
B)
C)
D)
decreasing the heat of reaction.
decreasing the activation energy.
increasing the energy of the products.
increasing the value of the equilibrium
constant.
E) increasing the potential energy of the reactants.
A) II and IV
C) I and III
E) II and III
B) I and II
D) I and IV