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Chapter 12: Acids & Bases

Total questions: 35

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

2.

Which of these pH values represent an acid?

a)

4

b)

8

c)

10

d)

12

3.

Which of the following are properties of acids?

a)

They conduct electricity when dissolved in water

b)

They taste sour

c)

They react with metals to produce hydrogen gas

d)

All of the answer choices are correct

4.

Bases have many uses. They are mainly used to make

a)

cleaning products

b)

soaps

c)

concrete

d)

all of the answer choices

5.

Which of the following pH values represents a base?

a)

2.1

b)

4.6

c)

6.8

d)

8.1

6.

If the substance is neutral, what would the pH be?

a)

3

b)

5

c)

7

d)

9

e)

11

7.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
8.

What would be considered the weakest base?

a)

8

b)

7.8

c)

11.6

d)

14

9.

Pure water has a pH of 7. Pure water _______.

a)

is a base

b)

is a neutral substance

c)

could be either an acid or a base

d)

is an acid

10.

Vinegar, fruit juice, and cola are examples of:

a)

salts

b)

neutral substances

c)

bases

d)

acids

11.
Which of the following shows the correct conjugate acid base pair?
a)
H2O (base) / H3O+ (conjugate acid)
b)
H2O (acid) / CH3COO- (conjugate base)
c)
CH3COOH (acid) / H3O+ (conjugate base)
d)
CH3COOH (base) / CH3COO- (conjugate acid)
12.
Which of the following shows the correct conjugate acid base pair?
a)
SO32-(base) / HSO3- (conjugate base)
b)
HPO42- (acid) / HSO3-(conjugate base)
c)
SO32-(acid) / HSO3- (conjugate base)
d)
HPO42- (acid) / PO43-(conjugate base)
13.
H2O is amphiprotic, can act as acid or base. Which of the following is TRUE ?
a)
H2O is an acid because it is a proton donor
b)
H2O is an base because it is a proton acceptor
c)
H2O can gain or lose a proton, H+
d)
H2O can easily form hydronium ion, H3O+
14.

NaOH is:

a)

an Arrhenius base

b)

an Arrhenius acid

c)

neither an acid nor a base

d)

both an acid and a base

15.

An Arrhenius base:

a)

donates H+

b)

accepts H+

c)

produces H+

d)

produces OH-

16.

An Arrhenius acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

17.
A hydrogen ion, H+, is the same as a(n):
a)
neutron
b)
electron
c)
proton
d)
hydroxide ion
18.

A Bronsted Lowry base:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

19.

Which of the following is the correct definition for a strong acid?

a)

Partially dissociates into ions when dissolved in water and the change is not reversible

b)

Fully dissociates into ions when dissolved in water and the change is not reversible

c)

Fully dissociates into ions when dissolved in water and the change is reversible

d)

Partially dissociates into ions when dissolved in water and the change is reversible

20.

For this reaction :


HA(aq) + H2O(l) ⇌ H3O+(aq) + A-(aq)


Which one can act as an acid ?

a)

HA(aq) and A-(aq)

b)

H2O(l) and H3O+(aq)

c)

HA(aq) and H3O+(aq)

d)

H2O(l) and A-(aq)

21.

What is the conjugate base in the following reaction?

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

22.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
23.
Which of the following shows the correct conjugate acid base pair?
a)
HCI (acid) / H3O+ (conjugate base)
b)
HCI (acid) / CI- (conjugate base)
c)
HCI (base) / CI- (conjugate acid)
d)
HCI (base) / H3O+ (conjugate acid)
24.

Water can act as both an acid and a base according to the bronsted lowry model. This means water is

a)

neutral

b)

conjugate

c)

ionic

d)

amphoteric

25.

Identify the true statement about the following reaction:

F- + H2O --> HF +OH-

a)

H2O is a bronsted lowry base

b)

H2O is not an acid or base according to either model

c)

H2O is a bronsted lowry acid

d)

H2O is an arrhenius acid

26.

A bronsted lowry acid

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

27.

A bronsted lowry acid

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

28.

Identify the true statement about the following reaction:

F- + H2O --> HF +OH-

a)

H2O is a bronsted lowry base

b)

H2O is not an acid or base according to either model

c)

H2O is a bronsted lowry acid

d)

H2O is an arrhenius acid

29.

Acid-base conjugate pairs differ by a single

a)

Electron

b)

Proton

c)

Neutron

d)

Oxygen

30.

NH3 + H2O --> NH4+ + OH-

What is H2O in this reaction?

a)

acid

b)

base

c)

conjugate acid

d)

conjugate base

31.

In the reaction below, H2O is a(n):

H2SO3 + H2O --> H3O+ + HSO3-

a)

base

b)

acid

c)

conjugate acid

d)

conjugate base

32.

Given the equation:

H2SO4 + H2O ↔ H3O+ + HSO4- 1

What is the conjugate acid?

a)

H2SO4

b)

H2O

c)

H3O+

d)

HSO4- 1

33.
In the reaction HCl + H2O --> H3O+ + Cl-, what is the conjugate acid?
a)
HCl
b)
H2O
c)
H3O+
d)
Cl-
34.

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

a)

NH3

b)

HCl

c)

NH4+

d)

Cl-

35.

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

a)

NH3

b)

NH4+

c)

Cl-

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