Section 14.2
Strengths of Acids and Bases
Practice Test
1.
An aqueous solution of a weak acid contains ___________________ unionized acid molecules.
a.
a high concentration of
b.
no
c.
a low concentration of
d.
100%
Hint
2.
Which of these formulas does NOT represent a strong acid?
a.
HBrO
b.
HBr
c.
HI
d.
H
2
SO
4
Hint
3.
Which of these is formed when ammonia ionizes in water?
a.
NH
4
+
b.
NH
2
-
c.
H
3
O
+
d.
N
3-
Hint
4.
Which of these is formed when magnesium oxide dissolves in water?
a.
OH
-
b.
Mg
-
c.
H
3
O
+
d.
Cl
-
Hint
5.
The pH scale is used to express the concentrations of hydronium ions and _____________ ions in aqueous solutions.
a.
carbon
b.
fluoride
c.
hydroxide
d.
potassium
Hint
6.
A pH 2 solution is ___________ times more acidic than a pH 4 solution.
a.
two
b.
ten
c.
one hundred
d.
one million
Hint
7.
A pH 13 solution is ______________ times more basic than a pH 9 solution.
a.
10
b.
100
c.
1000
d.
10 000
Hint
8.
A pH of 7 is considered to be _____________.
a.
highly basic
b.
neutral
c.
slightly acidic
d.
slightly basic
Hint
9.
Lemon juice is _______________.
a.
neutral
b.
slightly basic
c.
very acidic
d.
very basic
Hint
10.
What is the formula for perchloric acid?
a.
HClO
4
b.
HClO
2
c.
HClO
3
d.
HCl
Hint
11.
The reaction between nitric acid and barium hydroxide produces water and _____________.
a.
Ba(NO
3
)
2
b.
BaNO
c.
Ba
3
N
2
d.
Ba(NO
2
)
2
Hint
12.
Strong bases are more _______________ than weak bases.
a.
dense
b.
highly ionized
c.
nonmetallic
d.
molecular
Hint
13.
Which of these is neither an acid nor a base when mixed with water?
a.
C
2
H
6
b.
LiOH
c.
NH
3
d.
HI
Hint
14.
Compared to strong acids, weak acids produce __________ ions and conduct electricity __________ efficiently.
a.
fewer, more
b.
fewer, less
c.
more, more
d.
more, less
Hint
