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WorksheetsAcids, Bases, pH, and pOH
Total questions: 80
Worksheet time: 3hrs 40mins
Name
Class
Date
1.
In a neutralization reaction, what are the products of a reaction between an acid and a base?
a)
Another acid and base
b)
Carbon dioxide and a salt
c)
Water and a salt
d)
Either two acids or two bases
2.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
3.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
4.
Feels slippery.
a)
Acids
b)
Bases
c)
All
5.
Forms hydroxide ions in water
a)
Acids
b)
Bases
c)
All
6.
pH less than 7.
a)
Acids
b)
Bases
c)
All
7.
pH greater than 7.
a)
Acids
b)
Bases
c)
All
8.
What is a solution that has an excess of hydroxide (OH-) ions?
a)
pH
b)
acid
c)
neutral
d)
base
9.
Acids are found on the pH scale between which numbers?
a)
0-7
b)
7
c)
7-14
d)
19-42
10.
An acid/base reaction always produces:
a)
H2
b)
H2O
c)
NaCl
d)
H3O+
11.
A sample of pure water is neutral because it contains
a)
some H+ ions.
b)
equal amounts of hydroxide and hydrogen ions.
c)
some hydroxide ions.
d)
only H2O molecules.
12.
BASE + ACID ----> SALT +?
a)
water
b)
oxygen
c)
hydrogen ion
d)
hydroxide ion
13.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
14.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
15.
The pH scale measures ____ and ____
a)
acidity and basic
b)
the temperature
c)
how fun a chemistry quiz is
d)
none of the above
16.
Which is most acidic?
a)
milk
b)
Lemon Juice
c)
bleach
17.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
18.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
19.
A solution with a pH of 7 is________
a)
increasing
b)
neutral
c)
decreasing
d)
apple juice
20.
________ compounds conduct electricity.
a)
Molecular
b)
Ionic
c)
Metallic
d)
Radioactive
21.
When a few spoonfuls of sugar are mixed into a cup of water, sugar is the..
a)
..acid.
b)
...base.
c)
...solvent.
d)
...solute.
22.
In a water solution, how do acids differ from bases?
a)
Acids form hydrogen ions(H+), while bases form hydroxide ions (OH-)
b)
Acids turn litmus blue, while bases turn litmus red.
c)
Acids form salts, but bases do not.
d)
Hydrogen ions (H+)remain dissolved, by hydroxide ions (OH-) do not.
23.
Which of the following would not be used to indicate whether a solution was an acid or a base?
a)
pH Paper
b)
Phenolphthalein Solution
c)
Orange Juice
d)
Universal Indicator
24.
Salt, noodles, and a spice packet were added to water to make dinner. Which of these most likely was the solvent?
a)
Salt
b)
Water
c)
Noodles
d)
Spices
25.
Salt, noodles, and a spice packet were added to water to make dinner. Which of these most likely was the solute?
a)
Salt
b)
Water
c)
Noodles
d)
Spices
26.
Water is called the "universal solvent" because:
a)
All life contains water
b)
It dissolves only a few solutes
c)
It is found everywhere in the universe
d)
It is able to dissolve many different solutes
27.
Sugar, a molecule, separates into positive and negative ions when dissolved in water.
a)
True
b)
False
28.
Ionic and covalent bonds both involve giving, taking, or sharing this part of atom(s).
a)
The nucleus
b)
Protons
c)
Neutrons
d)
Electrons
29.
An ionic compound forms when two or more atoms share their electrons.
a)
True
b)
False
30.
Diluting a strong base will eventually lead to the solution becoming neutral.
a)
True
b)
False
31.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
32.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
33.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
34.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
35.
HBr is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
36.
LiOH is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
37.
A solution with a pH of 10 is mixed with a solution with a pH of 4. What would the pH of the mixture most likely be?
a)
10
b)
4
c)
40
d)
7
38.
A solution has a pH of 7.0. What would happen to the pH if OH ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
39.
How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?
a)
By tasting the solution
b)
By smelling the solution
c)
By testing the electrical conductivity of the solution
d)
By filtering the solution
40.
In a beaker of concentrated sugar water, pure water is a...
a)
...solute.
b)
...solvent.
c)
...solution.
d)
...supsension.
41.
When a few spoonfuls of sugar are mixed into a cup of water, sugar is the..
a)
..acid.
b)
...base.
c)
...solvent.
d)
...solute.
42.
The products of a neutralization reaction are acids and bases
a)
True
b)
False
43.
Acids are __________, which means they "eat away" at other materials.
a)
transitional metal
b)
alkiline
c)
flammable
d)
corrosive
44.
________ compounds conduct electricity.
a)
Molecular
b)
Ionic
c)
Metallic
d)
Radioactive
45.
Because it will dissolve so many solutes, __________ is called the universal solvent
a)
acetic acid
b)
lime
c)
nutella
d)
water
46.
What is the concentration of a 250g solution that has 50g of solute?
a)
10%
b)
15%
c)
20%
d)
25%
47.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
48.
A solution with a pH of 7 is________
a)
increasing
b)
neutral
c)
decreasing
d)
apple juice
49.
An acid/base reaction always produces:
a)
H2
b)
H2O
c)
NaCl
d)
H3O+
50.
The pH scale measures ____ and ____
a)
pH level
b)
the temperature
c)
how fun a chemistry quiz is
d)
none of the above
51.
If the [H+] of a solution is 1 x 10-2 mol/L the pH is
a)
2
b)
12
c)
-2
d)
1
52.
If the pH of a solution is 5 the [H+] is
a)
1.0 x 105 M
b)
1.0 x 109 M
c)
5.0 x 101 M
d)
1.0 x 10-5 M
53.
If the pH of a solution is 5.6 the pOH is
a)
6.5
b)
12.4
c)
8.4
d)
5.6
54.
A pH and a pOH will add up to:
a)
0
b)
7
c)
14
d)
1.0 x 10-14
55.
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
a)
10.44
b)
3.56
c)
1.00
d)
-4.43
56.
If the pH of a solution is 7 the solution is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
Tasty
57.
A solution with a [H+] of 9.4 x 10-5 mol/L is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
negative number, no solution.
58.
If the [H+] of a solution is 6.8 x 10-9 mol/L the pH is
a)
8.17
b)
8.2
c)
9.99
d)
8.62
59.
if the [H+] of a solution is 8.4 x 10-3 mol/L the pOH of the solution will be
a)
2.08
b)
11.92
c)
1.02
d)
12.98
60.
if a solution has a pOH of 5.2 the [OH-] of the solution is
a)
6 x 10 -6 M
b)
6.3 x 10 -6 M
c)
1.58 x 10-5 M
d)
2 x 10-5 M
61.
Limes have a [H3O+] of 1.3 x 10-2 mol/L. Their pOH is
a)
1.89
b)
12.11
c)
1.03
d)
12.97
62.
If the pH of an acid is 3, then it's pOH will be ...
a)
11
b)
3
c)
14
d)
12
63.
If the pOH of a base is 5, it's pH will be...
a)
2
b)
5
c)
14
d)
9
64.
Which of the following answer choices represents an acidic pH?
a)
1
b)
5
c)
7
d)
9
e)
11
65.
Which of the following pH values represents a basic pH?
a)
1
b)
5
c)
7
d)
9
e)
11
66.
How are pH and pOH related?
a)
pH+pOH = 14
b)
pH=pOH
c)
pH−pOH=14
d)
pH = pOH1
67.
What does the H in pH stand for?
a)
hydroxide
b)
hydrogen
c)
helium
d)
heat
68.
Acids have a ______ pH and a _________ pOH
a)
low, high
b)
high, low
c)
An acid will not have a pOH
69.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
70.
Which of these solutions is an acid?
a)
Dish Soap: pH of 12
b)
Tomato Soup: pH of 4
c)
Baking Soda: pH of 9
d)
Drain Cleaner: pH of 14
71.
Ammonia has a pOH of 2. Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
72.
The picture below shows the relative concentrations of H+ and OH- in a solution. Is the solution an acid or a base?
a)
acid
b)
base
73.
Water has a neutral because
a)
it has more H+ ions than OH-
b)
it has more OH- ions than H+
c)
it does not produce any ions
d)
it has an equal amount of H+ and OH- in solution
74.
A solution has a pH of 7.0. What would happen to the pH if H ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
75.
A solution has a pH of 7.0. What would happen to the pH if OH- ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
76.
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
a)
10.44
b)
3.56
c)
1.00
d)
-4.43
77.
What is the pOH of a 0.0124 M HCl solution?
a)
1.91
b)
12.09
c)
1.61
d)
12.39
78.
Find the pH of a 0.000841 M solution of sodium hydroxide
a)
3.07
b)
9.88
c)
10.92
d)
11.23
79.
The pH of a solution is 8.43. What is the hydronium ion H3O+ concentration?
a)
3.7 E-9 M
b)
2.7 E-6 M
c)
1.0 E-8.43 M
d)
1.0 E-14
80.
if the [H3O+] of a solution is 8.4 x 10-3 M, the pOH of the solution will be
a)
2.08
b)
11.92
c)
1.02
d)
12.98
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