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Acid and base

Total questions: 129

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

Which of the following products are formed when a metal carbonate reacts with an acid?

a)

Salt

b)

Water

c)

Carbon dioxide

d)

Acid

e)

Base

2.

Which of the following products are formed when a metal hydroxide reacts with an acid?

a)

Salt

b)

Water

c)

Carbon dioxide

d)

Acid

e)

Base

3.

Which acid can be found in Batteries?

a)

Sulfuric Acid

b)

Hydrochloric Acid

c)

Phosphoric Acid

d)

Acetic Acid

4.

Which represents an acid with the smallest Ka value?

a)

HX

b)

HY

c)

HZ

5.

Which two species would be identified as Bronsted-Lowry bases?

a)

HF and F-

b)

NH3 and F-

c)

NH3 and NH4+

d)

NH4+ and F-

6.

What is the term for a substance that can react as both an Acid or a Base?

a)

Amphoteric

b)

Amphitheater

c)

Amphibian

d)

Ambidextrous

7.
Which of the following is NOT a weak acid?
a)
CH3COOH
b)
H2SO4
c)
H2CO3
d)
H3PO4
8.
Acid + Metal --> ?
a)
Salt + Water
b)
Salt + Hydrogen
c)
Salt
d)
Hydrogen
9.

Barium Hydroxide is a strong base.

a)

True

b)

False

10.

Why must we conduct standardization?

a)

determine the true molarity of a substance

b)

to find out the concentration of an unknown acid we are titrating

c)

because it is a fun lab

d)

to find the neutral point of combining an acid and base

11.

The pH scale is used to know what?

a)

Your temperature

b)

Know one knows

c)

The colors of acids and bases

d)

The strength of acids and bases

12.

The following table shows the tests a student did on substance V and the conclusions made

from the observations. Complete the table by describing these observations for (c) i and ii

4 lines
13.
Which metal will not react with HCI to produce H2 gas?
a)
Tin 
b)
Iron 
c)
Copper 
d)
Aluminium
14.

Which of the following is NOT an acid?

a)

HCl

b)

CH3COOH

c)

C2H6

d)

H2SO4

15.

When a reaction reaches neutralization and you can physically see a change in color from the indicator, this is called the

a)

stoichiometric point

b)

endpoint

c)

equivalence point

d)

neutral point

16.
The following is true for physical properties of acids EXCEPT
a)
Acid has pH < 7
b)
Acid taste bitter
c)
Acid turn methyl orange to red
d)
Acid turns phenolphthalein to colorless
17.

Which solution can turn phenolphthalein pink?

a)

NaOH(aq)

b)

CH3COOH(aq)

c)

CH2OH(aq)

d)

HCl(aq)

18.

Phenolphthalein has a pink color in a solution that has a pH of

a)

5

b)

11

c)

1

d)

7

19.

Which solution would turn litmus blue?

a)

HCl(aq)

b)

CH3COOH(aq)

c)

H2SO3(aq)

d)

NH3(aq)

20.

Which indicators would cause a solution with a pH of 2 to turn red?

a)

Bromthymol blue and thymol blue

b)

Bromcresol green and litmus

c)

Litmus and methyl orange

d)

Methyl orange and phenolphthalein

21.

To neutralize a solution of HCl(aq), what solution should be added?

a)

NaOH(aq)

b)

H3PO4(aq)

c)

HNO3(aq)

d)

C12H22O11(aq)

22.
The pH of a strong acid would be:
a)
1-2
b)
5-6
c)
8-9
d)
12-13
23.
What is a substance that is one color in an acid and another color in a base? 
a)
Oxidizer
b)
Indicator
24.
The pH of a strong base would be:
a)
1-2
b)
5-6
c)
8-9
d)
13-14
25.
The pH of a weak acid would be:
a)
1-2
b)
5-6
c)
8-9
d)
12-13
26.
If a substance has a pH of 10 it is considered
a)
Acidic
b)
Basic
c)
Neutral
27.
Acids produce _________ ions when they break down or dissocciate. 
a)
Hydroxide (OH-)
b)
Water
c)
Chlorine (Cl-)
d)
Hydrogen (H+)
28.
Bases release ____________ ions when they break down or dissociate. 
a)
Hydrogen (H+)
b)
Hydroxide (OH-)
c)
Chlorine (Cl-)
d)
no
29.
Water is neutral because the number of hydrogen and hydroxide ions is _________.
a)
the same
b)
different
30.
The pH scale ranges from ____________.
a)
0-7
b)
1-100
c)
1-20
d)
0-14
31.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
32.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
33.
HF
a)
flouric acid
b)
hydrofluoric acid
c)
fluorate acid
d)
hydrogen fluoridic acid
34.
HI
a)
iodic acid
b)
hydroiodic acid
c)
iodous acid
d)
hypoiodous acid
35.
hydrochloric acid
a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
36.
Select the name for the following acid: H3PO4
a)
Phosphoric acid
b)
Phosphorous acid
c)
Hydrophosphoric acid
37.

A sour taste is a characteristic of:

a)

acids

b)

bases

c)

neutral

d)

pH scale

38.

Which is a characteristic of a base?

a)

tastes sour

b)

found mostly in foods

c)

feels slippery

d)

turn litmus paper red

39.

According to Arrhenius, what is the definition of an ACID?

a)

a substance that contains hydroxide and ionizes to produce OH-

b)

a substance that contains hydrogen and ionizes to produce H+

c)

a substance that contains hydrogen and ionizes to produce OH-

d)

a substance that contains hydroxide and ionizes to produce H+

40.

NaOH is:

a)

an Arrhenius base

b)

an Arrhenius acid

c)

neither an acid nor a base

d)

both an acid and a base

41.
If a solution is basic which ion will be more present?
a)
H+
b)
K+
c)
OH-
d)
H-
42.

Which of the following will conduct electricity? Select all that apply

a)

Acidic solutions

b)

Basic solutions

c)

Ionic solutions

d)

Neutral covalent solutions

43.

Neutralization is the process of an acid and a base reacting to form what? Select all that apply

a)

An ionic salt

b)

Hydronium ions

c)

NaCl

d)

Water

44.

When using the Arrhenius model, what types of ions indicate that a compound is a base?

a)

H+1

b)

OH-1

45.
A hydrogen ion, H+, is the same as a(n):
a)
neutron
b)
electron
c)
proton
d)
hydroxide ion
46.

A Bronsted Lowry acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

47.

A Bronsted Lowry base:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

48.

In the equation below, what is the Bronsted Lowry acid (donates H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

49.

In the equation below, what is the Bronsted Lowry base (accepts H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

50.

Which reactant in the following equation is a Bronsted Lowry acid?

H2O + HCl → H3O+ + Cl-

a)

Water

b)

Hydrogen chloride

c)

Hydronium

d)

Chloride

51.

Which product in the following equation is a conjugate base?

H2O + HCl → H3O+ + Cl-

a)

Water

b)

Hydrogen chloride

c)

Hydronium

d)

Chloride

52.

What is the Bronsted Lowry base in the following equation?

PO4-3 + HNO3 → NO3- + HPO4-2

a)

PO43-

b)

HNO3

c)

NO3-

d)

HPO42-

53.

What is the conjugate base in the following reaction?

HCO3- + HCl → H2CO3 + Cl-

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

54.

HSO4- + H2O → H3O+ +SO42-

Identify the Bronsted Lowry Acid in the above reaction.

a)

HSO4-

b)

H2O

c)

H3O+

d)

SO42-

55.

CO32- + H2O → HCO3- + OH-

Using the above reaction, which compound is the conjugate base?

a)

CO32-

b)

H2O

c)

HCO3-

d)

OH-

56.

The Acid-Base classification system that defined any chemical species that accepts a pair of electrons as an acid, and a base is a chemical species that donates a pair of electrons.

a)

Bronsted-Lowry

b)

Arrhenius acid-base

c)

Lewis acid-base

d)

Monoprotic and Polyprotic Acids

57.

What is the range of the pH scale?

(a)  

58.

Which of the following will conduct electricity? Select all that apply

a)

Acidic solutions

b)

Basic solutions

c)

Ionic solutions

d)

Neutral covalent solutions

59.

If a solution has a pH of 1 what is the pOH? Is it an acid or base? (pick 2)

a)

acid

b)

base

c)

13

d)

15

e)

neutral

60.

Which one of the following is NOT a property of acids.

a)

Tastes sour

b)

Corrodes metals

c)

Conduct electricity

d)

Turns red litmus paper blue

61.

If the pH of a solution is 4.0, what is the pOH?

a)

4.0

b)

10.0

c)

1.0 x 10 -4

d)

cannot be determined from the information

62.

If the [H3O+] of a solution is 6.8 x 10-8 M, the pH is

a)

7.17

b)

3.2 x 10-5

c)

7.2

d)

7.62

63.

If the [H3O+] of a solution is 1 x 10-3 M, the pH is

a)

11

b)

-3

c)

3

d)

1

64.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
65.

Acids have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

66.

The current pH of Earth's oceans is....

a)

less than 7

b)

equal to 7

c)

greater than 7

67.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
68.

Accepts a pair of electrons

a)

Lewis Acid

b)

Lewis Base

c)

Bronsted Lowry Acid

d)

Arrhenius Base

69.

Neutral solutions have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

70.

According to Arrhenius, what is the definition of an ACID?

a)

a substance that contains hydroxide and ionizes to produce OH-

b)

a substance that contains hydrogen and ionizes to produce H+

c)

a substance that contains hydrogen and ionizes to produce OH-

d)

a substance that contains hydroxide and ionizes to produce H+

71.

When a water molecule loses a hydrogen ion, or proton, it becomes ___

a)

a hydronium ion, H3O+

b)

a hydroxide ion, OH-

c)

a hydronium ion, OH-

d)

a hydroxide ion, H3O+

72.

All bases have a sour taste.

a)

True

b)

False

73.

If a solution is basic which ion will be more present?

a)

H+

b)

K+

c)

OH-

d)

H-

74.
What do bases do to blue litmus paper?
a)
Turn it Red 
b)
Turn it Blue
c)
Turn it Yellow
d)
Turn it Green
75.

The objects within this image can be classified as....

a)

Acids

b)

Bases

c)

Neutral Substances

d)

Kitchen acids

76.
Any substance that produces hydroxide ions in water is known as _____________.
a)
an acid
b)
a hydrogen ion
c)
a base
d)
a neutral
77.

Which of the following is a property of a base?

a)

bitter taste

b)

reacts with metals

c)

salty

d)

sour taste

78.

What is the meaning of the above hazard warning symbol?

a)

Corrosive

b)

Explosive

c)

Toxic

d)

Radioactive

79.

Weaker bases have a pH closer to...

a)

8

b)

14

c)

0

d)

4

80.

pH is the measure of the concentration of ______.

a)

Acids

b)

H+ ion

c)

OH- ion

d)

Base

81.

What is the reaction/equation for this Kc expression

a)

2N2 + O2 ⇌ 2NO

b)

N2 + O2 ⇌ NO

c)

NO ⇌ 2NO

d)

N2 + O2 ⇌ 2NO

82.

What is the equation/reaction for this Kc expression?

a)

O3 ⇌ 3O2

b)

2O3 ⇌ 3O2

c)

2O3 ⇌ O2

d)

3O2 ⇌ 2O3

83.

The Kc expression for the reaction 2NH3 ⇌ N2 + 3H2

a)
b)
c)
d)
84.

Kc = ?

a)

products / reactants

b)

reactants /products

85.

Molarity is measured in _____.

a)

moles per gram

b)

moles per liter

c)

moles per millimeter

d)

moles per milliliter

86.

The _____ is the substance that is being dissolved.

a)

solute

b)

solvent

87.

What is a solvent?

a)

The substance that does the dissolving in a solution.

b)

The substance that is being dissolved in a solution.

c)

The mixing of different substances.

d)

The process in which neutral molecules lose or gain electrons.

88.

Which represents the unit for molarity?

a)

M

b)

m

c)

ML

d)

Mr

89.

Molarity measures the _______ of a solution.

a)

concentration

b)

molar mass

c)

atomic weight

d)

ionic charge

90.

The square brackets in a Kc expression represent ?

a)

concentration

b)

concentration in mol L-1

c)

concentration in g L-1

d)

the same as round brackets

91.
When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in
a)
Chemical Equilibrium
b)
Chemical Balance
c)
Chemical Constant
d)
Chemical Reaction
92.
If a substance has a pH of 10 it is considered
a)
Acidic
b)
Basic
c)
Neutral
93.
Acids produce _________ ions when they break down or dissocciate. 
a)
Hydroxide (OH-)
b)
Water
c)
Chlorine (Cl-)
d)
Hydrogen (H+)
94.
Bases release ____________ ions when they break down or dissociate. 
a)
Hydrogen (H+)
b)
Hydroxide (OH-)
c)
Chlorine (Cl-)
d)
no
95.
Water is neutral because the number of hydrogen and hydroxide ions is _________.
a)
the same
b)
different
96.
The pH scale ranges from ____________.
a)
0-7
b)
1-100
c)
1-20
d)
0-14
97.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
98.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
99.
HF
a)
flouric acid
b)
hydrofluoric acid
c)
fluorate acid
d)
hydrogen fluoridic acid
100.
HI
a)
iodic acid
b)
hydroiodic acid
c)
iodous acid
d)
hypoiodous acid
101.
hydrochloric acid
a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
102.

Nitric acid

a)

H2NO3

b)

HNO3

c)

HNO2

d)

H2NO2

103.
Select the name for the following acid: H3PO4
a)
Phosphoric acid
b)
Phosphorous acid
c)
Hydrophosphoric acid
104.
What color does acid turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns red litmus paper blue.
c)
It turns blue litmus paper blue.
d)
It turns blue litmus paper red.
105.
What color does bases turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns blue litmus paper red.
c)
It turns red litmus paper blue.
d)
It turns red litmus paper re
106.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
107.
What is a substance that is one color in an acid and another color in a base? 
a)
Oxidizer
b)
Indicator
108.
According to the image, the substance tested is a...
a)
Acid
b)
Neutral
c)
Strong Acid
d)
Base
109.
According to the image, the substance tested is a...
a)
Acid
b)
Base
c)
Neutral
d)
Strong Acid
110.

Which solution can turn phenolphthalein pink?

a)

NaOH(aq)

b)

CH3COOH(aq)

c)

CH2OH(aq)

d)

HCl(aq)

111.

Which solution would turn litmus red?

a)

KOH(aq)

b)

NaCl(aq)

c)

HCl(aq)

d)

NH3(aq)

112.

Which solution would turn litmus blue?

a)

HCl(aq)

b)

CH3COOH(aq)

c)

H2SO3(aq)

d)

NH3(aq)

113.

To neutralize a solution of HCl(aq), what solution should be added?

a)

NaOH(aq)

b)

H3PO4(aq)

c)

HNO3(aq)

d)

C12H22O11(aq)

114.

What would be the best way to determine if a substance is an acid or a base?

a)

Drop some on your skin.

b)

Taste it.

c)

Use an indicator such as litmus or universal indicator.

d)

Add it to some metal and test any gas that evolves.

115.

Which solution can turn phenolphthalein pink?

a)

Sodium hydroxide

b)

Vinegar

c)

Tomato

d)

Hydrochloric acid

116.

Which solution would turn litmus red?

a)

Potassium hydroxide

b)

Sodium chloride

c)

HNO3

d)

Ammonia

117.

What is the nature of the solution present in the beaker?

a)

Alkali

b)

Acidic

c)

Neutral

d)

Water

118.

Which of the set of pH paper depicts that the dipped solution is highly acidic?

(compare with the pH scale and find out)

a)
b)
c)
119.

Which solution would turn litmus blue?

a)

HCl(aq)

b)

CH3COOH(aq)

c)

H2SO3(aq)

d)

NH3(aq)

120.
Bases will turn litmus paper __________, while acids will turn litmus paper __________.
a)
blue.....red
b)
red.....blue
c)
pink.........colourless
d)
colourless..........pink
121.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
122.
The pH of a strong acid would be:
a)
1-2
b)
5-6
c)
8-9
d)
12-13
123.
The pH of a strong base would be:
a)
1-2
b)
5-6
c)
8-9
d)
13-14
124.
According to the image, the substance tested is a...
a)
Acid
b)
Neutral
c)
Strong Acid
d)
Base
125.
Pure water is _______ on the pH scale.
a)
Acid
b)
Base
c)
Neutral
126.
What is the range of pH values in an acidic solution?
a)
0-6
b)
8-14
c)
15-239058204958
d)
pH = 7
127.
If the pH of a solution is 9, it is a....
a)
acid
b)
base
c)
both
d)
none
128.
What is the range of pH values in an alkali (basic) solution?
a)
0-6
b)
8-14
c)
15-239058204958
d)
pH = 7
129.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13

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