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Acid, Base, and Salts

Total questions: 65

Worksheet time: 2hrs 16mins

Name
Class
Date
1.

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

2.

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

3.

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

4.

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

5.

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

a)

0-14

b)

below 7

c)

7

d)

above 7

6.

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

a)

1

b)

6

c)

7

d)

13

7.

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

a)

1

b)

8

c)

7

d)

13

8.

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

9.

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

10.

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

11.

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

12.

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

13.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
14.
What is the conjugate base in the following reaction?
a)
HCO3- 
b)
HCl
c)
 H2CO3 
d)
Cl-
15.

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

a)

HH4+ , OH-

b)

H2O , OH-

c)

CaCO3 ,CaCl2

d)

HNO3 , H2SO4

16.

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

a)

NH3

b)

NH4+

c)

Cl-

17.

What is the colour of litmus in an acid ?

a)

Pink

b)

Yellow

c)

Red

d)

Colourless

18.

What is the colour of litmus in a base ?

a)

Pink

b)

Blue

c)

Red

d)

Colourless

19.

What is the colour of phenolphthalein in a base ?

a)

Pink

b)

Blue

c)

Red

d)

Colourless

20.

What is the colour of methyl orange in a base ?

a)

Pink

b)

Blue

c)

Yellow

d)

Colourless

21.

What is the colour of methyl orange in a base ?

a)

Pink

b)

Blue

c)

Yellow

d)

Colourless

22.
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
23.
What is the pH of a solution that has a [H+] of 2.5 x 10-5?
a)
4.60
b)
5.0
c)
2.5
d)
7
24.
What is the pH of a solution that has a [H+] of 2.5 x 10-5?
a)
4.60
b)
5.0
c)
2.5
d)
7
25.
What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?
a)
-1.14
b)
2.0
c)
1.14
d)
7.3
26.
What is the [H+] if the pH is 4.0?
a)
1.0 x 10-10  M
b)
1.0 x 10-4  M
c)
1.0 x 10-14  M
d)
1.0 x 10-7  M
27.

What is the [H+] in a solution with a pH of 11?

a)

1 x 10-1 M

b)

1 x 10-2 M

c)

1 x 1011 M

d)

1 x 10-11 M

28.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
29.
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
30.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
31.

What are the products of this UNBALANCED neutralization reaction:

KOH + H2SO4 -->

a)

HOH + K2SO4

b)

KSO4 + HOH

c)

HOH + HSO4- + K+

32.

What are the products of this UNBALANCED neutralization reaction:

Al(OH)3 + H3PO4 -->

a)

HOH + AlPO4

b)

HOH + Al3(PO4)3

c)

HOH + H2PO4 +Al+3

33.

When found in food, acids often taste ________.

a)

Sour

b)

Bitter

c)

Salty

d)

Slippery

34.

When found in food, bases often taste _______.

a)

Sour

b)

Bitter

c)

Salty

d)

Soggy

35.

When you place blue litmus paper into an unknown solution, the litmus paper turns red.

Which of the following represents the most logical conclusion?

a)

The substance has a pH value of 2.

b)

The substance is a base.

c)

The substance has a pH value of 7.

d)

The substance is an acid.

36.

Which of the following are electrolytes?

a)

acids

b)

bases

c)

water

d)

salts

e)

sugar

37.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

38.

KOH is ...

a)

an acid

b)

a base

c)

a salt

39.

I am titrating 2M HCl with 1M NaOH. I have 25mL of HCl. How much NaOH will I need?

a)

2.5mL

b)

5mL

c)

25mL

d)

50mL

40.

What kind of reaction is it when and acid mixes with a base to make salt & water?

(a)  

41.

Answer question in the image

a)

A

b)

B

c)

C

d)

D

42.

Milk is a very weak acid. What might its pH value be?

a)

6.5

b)

7.8

c)

4.2

d)

12.2

43.

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

44.

An arrhenius 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

45.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
46.

Complete the following reaction:

HNO3 + Ca(OH)2 -->

a)

Ca(NO3)2 + H2O

b)

Ca +H2O

c)

Ca(NO3)2 + H2

d)

Ca(NO3)2 + H2O + CO2

47.

Which of the following statements is correct about an aqueous solution of an acid and of a base?

(i) Higher the pH, stronger the acid

(ii) Higher the pH, weaker the acid

(iii) Lower the pH, stronger the base

(iv) Lower the pH, weaker the base

a)

(i) and (iii)

b)

(ii) and (iii)

c)

(i) and (iv)

d)

(ii) and (iv)

48.

Name the following acid: HBr

a)

Hydrobromic Acid

b)

Bromic Acid

c)

Hydrogen Monobromide Acid

d)

Bromous Acid

49.

During a neutralization reaction the salt, KBr, is produced. What acid reacted?

a)

HK

b)

KOH

c)

HBr

d)

HOH

50.

.5 M KOH is added to a buret to find the concentration of 10 mL of HF, what is the standard solution in this titration?

a)

KOH

b)

HF

c)

H2O

51.

A student collects the following data during a titration. Calculate the concentration of acid:

Volume of Acid: 20. mL HCl

Concentration of NaOH: 1.0 M NaOH

Initial Buret Reading of NaOH: 1.70 mL

Final Buret Reading: 32.20 mL

a)

1.6 M HCl

b)

1.5 M HCl

c)

0.085 M HCl

d)

0.66 M HCl

52.
What do acids do to blue litmus paper?
a)
Turn it Red 
b)
Turn it Blue
c)
Turn it Yellow
d)
Turn it Green
53.
What do acids do to blue litmus paper?
a)
Turn it Red 
b)
Turn it Blue
c)
Turn it Yellow
d)
Turn it Green
54.

Is the following compound an acid or a base?


NH4OH

a)

acid

b)

base

55.

A student is studying a substance that tastes bitter and is slippery to touch. When phenolpthalein is added is turns magenta. What is the student most likely studying?

a)

water (neutral)

b)

lemon juice (acid)

c)

drain cleaner (base)

d)

salt solution (neutral)

56.

A student is studying a substance that tastes bitter and is slippery to touch. When phenolpthalein is added is turns magenta. What is the student most likely studying?

a)

water (neutral)

b)

lemon juice (acid)

c)

drain cleaner (base)

d)

salt solution (neutral)

57.

What is the colour of litmus in a base ?

a)

Pink

b)

Blue

c)

Red

d)

Colourless

58.

An acid is a solution that contains __________ ions dissolved in water.

a)

positive

b)

negative

59.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
60.
Drain cleaner has a pH of 13. What is drain cleaner?
a)
An acid.
b)
A strong base.
c)
Neutral.
d)
A weak base.
61.

A pH of 3 is how many times more acidic than a pH of 5?

a)

2

b)

20

c)

10

d)

100

62.

A 0.025L solution of HCl is neutralized by 0.018L of a 1.0 M NaOH solution. What is the concentration of the HCl solution?

Use the steps in your notes to help you set up this problem!

a)

1.44 M

b)

4 M

c)

0.72 M

d)

None of the above

63.

A 0.050L solution of Ba(OH)2 is neutralized by 0.072L of a 0.55 M HNO3 solution. What is the concentration of the Ba(OH)2 solution?

a)

2 M

b)

0.40 M

c)

1.2 M

d)

None of the above

64.

Which of the following pH values represents the greatest concentration of -OH ions?

a)

3

b)

6

c)

9

d)

1

65.

Which of the following pH values represents the greatest concentration of H+ ions?

a)

3

b)

6

c)

9

d)

1

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