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Acids & Bases

Total questions: 40

Worksheet time: 2hrs 38mins

Name
Class
Date
1.

A sour taste is a characteristic of:

a)

acids

b)

bases

c)

neutral

d)

pH scale

2.

Which is a characteristic of a base?

a)

tastes sour

b)

found mostly in foods

c)

feels slippery

d)

turn litmus paper red

3.

pH is the measure of the concentration of ______.

a)

Acids

b)

H+ ion

c)

OH- ion

d)

Bases

4.

What is the definition of an BASE?

a)

a substance that donates a hydrogen (H+) ion

b)

a substance that donates a hydroxide (OH-) ion

c)

a substance that accepts a hydrogen (H+) ion

d)

a substance that accepts a hydroxide (OH-) ion

5.

What is being donated/accepted between conjugate acid-base pairs?

a)

a hydrogen (H+) ion

b)

a hydroxide (OH-) ion

c)

water

d)

a neutron

6.

What is the conjugate base in the following reaction?

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

7.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
8.
If a solution is basic which ion will be more present?
a)
H+
b)
K+
c)
OH-
d)
H-
9.

The conjugate base of HCO3- is:

a)

CO3-2

b)

H2CO3

c)

H3CO3

d)

OH-

10.

Which of the following is NOT a characteristic of a weak acid dissolved in water?

a)

dissociates 100% into ions

b)

produces a solution with pH <7

c)

produces H3O+ ions

d)

is a proton donor

11.
H3PO4 is an example of a ...
a)
acid
b)
base
c)
salt
12.
Zn(OH)2 is an example of a...
a)
acid
b)
base
c)
salt
13.
Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
14.

A solution of HCl has a [H+] = 7.2 x 10-9. Is this and acid or a base?

a)

Acid

b)

Base

15.

Which of the following conditions represents a neutral solution?

a)

[OH-] = 1.0 x 10-7 M

b)

[H+] = 1.0 x 10-7 M

c)

[H+][OH-] = 1.0 x 10-14 M

d)

All of the answer choices!

16.

What is the [OH-] if the [H+] is 1.0 x 10-3 M?

a)

1.0 x 10-3 M

b)

6.02 x 10-23 M

c)

1.0 x 10-14 M

d)

1.0 x 10-11 M

17.

What is the pH of a 1.53 x 10-6 M solution of HCl?

a)

5.82

b)

8.18

c)

6.99

d)

4.15

18.

What is the [H+] in a solution of pH = 2.83?

a)

1.48 x 10-3 M

b)

3.84 x 10-6 M

c)

7.12 x 10-4 M

d)

4.49 x 10-2 M

19.

What is the pH of a 1 x 10-8 M solution of HNO3?

a)

8

b)

6

c)

7

d)

7.5

20.
What is the [OH-] if the [H+] is 1.0 x 10-3M?
a)
1.0 x 10-3 M
b)
6.02 x 10-23 M
c)
1.0 x 10-14 M
d)
1.0 x 10-11 M
21.
What is the formula for hydrochloric acid?
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
22.
What is the formula for phosphorous acid?
a)
H3PO4
b)
H2PO4
c)
H3P
d)
H3PO3
23.
Name HF
a)
hydrofluoric acid
b)
Hypofluoric acid
c)
hydrogen fluorine acid
d)
fluoric acid
24.
Potassium hydroxide
a)
KOH
b)
K2OH
c)
k(OH)2
25.
NaOH
a)
sodium oxide
b)
sodium hydrogen
c)
sodium hydroxide
26.

The pH of a solution is 8.43. What is the [H3O+]concentration?

a)

3.7 x 10 -9

b)

1.0 x 10-8.43

c)

2.7 x 10-6

d)

1.0 x 10-14

27.

If the pH of a solution is 8 the [H3O+] is

a)

1.0 x 106 M

b)

8.0 x 101 M

c)

1.0 x 108 M

d)

1.0 x 10-8 M

28.

Find the pH of a solution with [OH-] = 8.41 x 10-4.

a)

3.08

b)

10.92

c)

9.88

d)

11.23

29.

What is the [OH-] if the [H+] is 1.0 x 10-3M?

a)

1.0 x 10-3 M

b)

1.0 x 10-14 M

c)

6.02 x 10-23 M

d)

1.0 x 10-11 M

30.
A neutralisation reaction is a reaction between 
a)
Acid and a Base 
b)
Acid and water 
c)
Base and water 
d)
None of the above 
31.
An acid reacts with metal to produce 
a)
Carbon dioxide 
b)
Hydrogen gas
c)
Hydrogen gas and water 
d)
Salt and hydrogen gas 
32.
A neutralisation reaction produces 
a)
An acid 
b)
A neutral substance 
c)
Only water 
d)
Salt and water 
33.
An acid reacts with a metal carbonate to produce 
a)
Salt, water and hydrogen gas
b)
Salt, water and carbon dioxide
c)
Limewater
d)
Salt and water 
34.
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide --> 
a)
Magnesium chloride + water 
b)
Magnesium + water
c)
Magnesium chloride + hydrogen gas 
d)
Magnesium chloride + water + carbon dioxide 
35.
What is the endpoint of a titration
a)
Where the amount of acid and base are balanced according to the equation
b)
Where there is no base
c)
At the end
36.
I have 25mL of 1M HCl which neutralises 20mL of NaOH. What is the concentration of the NaOH?
a)
0.8 M
b)
1 M
c)
1.25 M
37.
Identify the products of the chemical equation
3 LiOH + H3PO4 →
a)
Li3PO4 + 3 H2O
b)
LiPO4 + 3 H2O
c)
Li(PO4)3 + 3 H2O
d)
BOY + La + N2
38.
If phenolphthalein turns bright pink, it indicates
a)
an acid 
b)
a base
c)
a neutral
39.

A 25.00 mL sample of HCl was titrated to the end point with 15.00 mL of 2.00 M NaOH. The following neutralization reaction occured: HCl  +  NaOH  →  NaCl  +  H2OHCl\ \ +\ \ NaOH\ \ \rightarrow\ \ NaCl\ \ +\ \ H_2O  
What is the molarity of the HCl? 

a)

0.650 M

b)

1.05 M

c)

1.20 M

d)

1.50 M

40.

A 10.00 mL sample of H2SO4 was neutralized by 13.5 mL of 1.00 M KOH by the following reaction: H2SO4 +  2KOH  →  K2SO4  +  2H2OH_2SO_4\ +\ \ 2KOH\ \ \rightarrow\ \ K_2SO_4\ \ +\ \ 2H_2O  
What is the molarity of H2SO4?

a)

0.675 M

b)

0.910 M

c)

1.05 M

d)

1.20 M

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