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Worksheets

Acids and Bases Review

Total questions: 70

Worksheet time: 36mins

Name
Class
Date
1.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

2.

Which is true?

a)

pH of less than 7 is basic; pH of more than 7 is acidic

b)

pH of less than 7 is acidic; pH of more than 7 is basic

3.

Vinegar, fruit juice, and cola are examples of:

a)

strong acids

b)

strong bases

c)

strong bases

d)

weak acids

4.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

5.

HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

6.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

7.
tastes sour
a)
acid
b)
base
8.
tastes bitter
a)
base
b)
acid
9.
feels slippery
a)
acid
b)
base
10.
reacts with metals
a)
base
b)
acid
11.
pH below 7
a)
base
b)
acid
12.
pH above 7
a)
acid
b)
base
13.
distilled water
a)
pH 3
b)
pH 7
c)
pH 11
d)
pH 14
14.
pH 12
a)
base
b)
acid
15.
pH 2
a)
acid
b)
base
16.

Sulfuric Acid has a pH above 7.

a)

True

b)

False

17.

Which of the following formulas is an Arrhenius BASE?

a)

HCl

b)

H2SO4

c)

NaOH

d)

HNO3

18.

Which of the following formulas is an Arrhenius ACID?

a)

Ca(OH)2

b)

KOH

c)

NH4OH

d)

HCl

19.

Classify the following:


H2SO4

a)

acid

b)

base

c)

neither

20.

Classify the following:


NaCl

a)

acid

b)

base

c)

salt

21.

What happens when an acid and a base are mixed together?

a)

they explode

b)

nothing will happen

c)

a salt & water are formed

d)

a weaker base & stronger acid are formed

22.

The more H+ ions the solution has, the more ____________ it is.

a)

acidic

b)

basic

23.
pH is
a)
the level of acidity
b)
the measure of H+ ions
c)
measured using a scale of 1-14
d)
all of the above
24.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
d)
fish
25.

Which of the following values would represent the pH of a strong base?

a)

1

b)

8

c)

7

d)

13

26.

Which of the following values would represent the pH of a strong acid?

a)

1

b)

6

c)

7

d)

13

27.

What range of values on the pH scale represent solutions with a higher ratio of hydronium ions (H3O+) or protons (H+)?

a)

0-14

b)

below 7

c)

7

d)

above 7

28.

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH-) ions?

a)

below 7

b)

7

c)

above 7

d)

0-14

29.

Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?

a)

Lemon Juice - pH=2

b)

Apple Juice - pH=4.5

c)

Shower Cleaner - pH=5.5

d)

Hydrogen Peroxide - pH=7

30.

Many cleaning solutions are bases. Which of the following is a common property among basic solutions?

a)

slippery feel

b)

white color

c)

salty taste

d)

sour taste

31.

Acidic solutions exhibit a higher ratio of H3O+ ions, known as...

a)

neutrons

b)

hydroxide

c)

electrons

d)

hydronium

32.

The products of a neutralization reaction are usually...

a)

salt and water

b)

an acid and a base

c)

a neutral solution

d)

carbon dioxide and oxygen

33.

The reactants in a neutralization reaction are always...

a)

salt and water

b)

an acid and a base

c)

a neutral solution

d)

carbon dioxide and oxygen

34.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
35.

All acids form ions when dissolved in water. Which ion makes the solution acidic?

a)

H+

b)

OH-

c)

A-

d)

B+

36.

Alkalis (bases) form ions when they dissolve in water. Which ion makes the solution alkaline (basic)?

a)

H+

b)

OH-

c)

A-

d)

B+

37.

Accepts a proton (H+ hydrogen ion)

a)

Lewis Base

b)

Arrhenius Base

c)

Bronsted-Lowry Base

d)

Lewis Acid

38.

Forms a hydroxide ion (OH-) when mixed in a solution

a)

Lewis Base

b)

Arrhenius Base

c)

Bronsted Lowry Base

d)

Bronsted-Lowry Acid

39.
What is the formula for nitric acid?
a)
HNO2
b)
HNO3
c)
HN
d)
H2NO3
40.
The table shows the pH of several solutions. Which solution has the greatest concentration of H+ ions?
a)
vinegar
b)
milk
c)
water
d)
bleach
41.

Which of these best describes an acid?

a)

Any group of compounds that produce H+ ions

b)

Any group of compounds that produce OH- ions

c)

Ionic compound formed between a metal and a nonmetal

d)

A charged particle, atom, or ion

42.
Which of these will react with zinc to produce hydrogen gas?
a)
sulfuric acid
b)
sodium sulfate
c)
ammonium hydroxide 
d)
sodium hydroxide 
43.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
44.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
45.
A hydrogen ion, H+, is the same as a(n):
a)
neutron
b)
electron
c)
proton
d)
hydroxide ion
46.

What is another term that means basic?

a)

Acidic

b)

Alkaline

c)

pH < 7

d)

Neutral

47.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
48.
Which of the following neutralization reaction is wrong?
a)
LiOH + HCI → LiCI + H2O
b)
Fe(OH)2 + 2HNO3 → Fe(NO3)2 + 2H2O
c)
CaO + 2HCI → CaCI2 + H2O
d)
CaCO3 + 2HCI → CaCI2 + H2O
49.

Solution changes from pH 2 to 5. What is the change in concentration of H+ during this pH shift?

a)

Decrease by factor of 1000

b)

Increase by factor of 1000

c)

Decrease by factor of 100

d)

Increase by factor of 100

50.
Concentration of H+ ion is 1 x 10-12. Find its pH.
a)
pH = 2
b)
pH = 12
c)
pH = -12
d)
pH = 10
51.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

52.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
53.
What is the conjugate base in the following reaction?
a)
HCO3- 
b)
HCl
c)
 H2CO3 
d)
Cl-
54.
What is the conjugate base of HCO3-?
a)
HCO3-
b)
H2CO3-
c)
H2CO3
d)
CO32-
55.
Which accepts protons?
a)
Brønsted-Lowry Acids
b)
Brønsted-Lowry Bases
c)
Arrhenius Acids
d)
Arrhenius Bases
56.
What substances increase H+ ion concentrations when dissolved in water?
a)
Brønsted-Lowry Acids
b)
Brønsted-Lowry Bases
c)
Arrhenius Acids
d)
Arrhenius Bases
57.
What substances increase OH- ion concentrations when dissolved in water?
a)
Brønsted-Lowry Acids
b)
Brønsted-Lowry Bases
c)
Arrhenius Acids
d)
Arrhenius Bases
58.
Which donates protons?
a)
Brønsted-Lowry Acids
b)
Brønsted-Lowry Bases
c)
Arrhenius Acids
d)
Arrhenius Bases
59.
When a hydrogen ion is released what does the solution become?
a)
Basic
b)
Acidic
c)
Amphoteric
d)
Proton
60.
When a hydroxide ion is released what does the solution become?
a)
Basic
b)
Acidic
c)
Amphoteric
d)
Proton
61.

What is the Bronsted-Lowry base in the following equation?

a)

PO43-

b)

HNO3

c)

NO3-

d)

HPO42-

62.

How do Bronsted-Lowry conjugate acid-base pairs differ?

a)

differ by one H+

b)

Differ by one OH-

c)

Differ by two H+

d)

Differ by some number of H+

63.

Which of the following correctly identifies an acid-base pair?

a)

HCl, NaOH

b)

H2CO3 , CO32-

c)

H3O+ , OH-

d)

NH3, NH4+

64.

Which of the following correctly identifies an Acid-Base Pair?

a)

HH4+ , OH-

b)

H2O , OH-

c)

CaCO3 ,CaCl2

d)

HNO3 , H2SO4

65.

Given the reaction above, which compound is the Bronsted-Lowry Acid?

a)

NH3

b)

HCl

c)

NH4+

d)

Cl-

66.

Given the reaction above, which compound is the Bronsted-Lowry Conjugate base, if HCl is the acid?

a)

NH3

b)

NH4+

c)

Cl-

67.
A compound that donates H+ ions is 
a)
A Bronsted-Lowry Acid
b)
An Arrhenius Acid
c)
A Bronsted-Lowry Base
d)
An Arrhenius Base
68.

A substance that remains in a reaction where a base has accepted an H+ ion is?

a)

An acid

b)

A Base

c)

A Conjugate Acid

d)

A Conjugate Base

69.
Which of the following is transferred between a conjugate acid-base pair?
a)
An Electron
b)
A OH- ion
c)
A Proton
d)
A Neutron
70.

According to Bronsted-Lowry, water is amphoteric. This means it

a)

Always loses protons to form OH-

b)

Always gains protons to form H3O+

c)

Can lose or gain protons (H+) to act as an acid or a base

d)

Is Switzerland (Always stays neutral)